|
|
|
| Synonyms |
|
|
| Definition |
Anthocyanins are obtained by maceration or extraction with sulphited water, acidified water, carbon dioxide, methanol or ethanol from the strains of vegetables and edible fruits, with subsequent concentration and/or purification if necessary. The resulting product can be transformed into powder by an industrial drying process. Anthocyanins contain common components of the source material, namely anthocyanine, organic acids, tannins, sugars, minerals etc., but not necessarily in the same proportions as found in the source material. Ethanol may naturally be present as a result of the maceration process. The colouring principle is anthocyanin. Products are marketed according to their colour strength as determined by the assay. Colour content is not expressed using quantitative units. |
Anthocyanins are obtained by maceration or extraction with sulphited water, acidified water, carbon dioxide, methanol or ethanol from the strains of vegetables and edible fruits, with subsequent concentration and/or purification if necessary. The resulting product can be transformed into powder by an industrial drying process. Anthocyanins contain common components of the source material, namely anthocyanine, organic acids, tannins, sugars, minerals etc., but not necessarily in the same proportions as found in the source material. Ethanol may naturally be present as a result of the maceration process. The colouring principle is anthocyanin. Products are marketed according to their colour strength as determined by the assay. Colour content is not expressed using quantitative units. |
| Colour Index No |
|
|
| Einecs |
208-438-6 (cyanidin); 205-125-6 (peonidin); 208-437-0 (delphinidin); 211-403-8 (malvidin); 205-127-7 (pelargonidin); 215-849-4 (petunidin) |
208-438-6 (cyanidin); 205-125-6 (peonidin); 208-437-0 (delphinidin); 211-403-8 (malvidin); 205-127-7 (pelargonidin); 215-849-4 (petunidin) |
| Chemical name |
3,3′,4′,5,7-Pentahydroxy-flavylium chloride (cyanidin) 3,4′,5,7-Tetrahydroxy-3′-methoxyflavylium chloride (peonidin) 3,4′,5,7-Tetrahydroxy-3′,5′-dimethoxyflavylium chloride (malvidin) 3,5,7-Trihydroxy-2-(3,4,5,trihydroxyphenyl)-1-benzopyrylium chloride (delphinidin) 3,3′4′,5,7-Pentahydroxy-5′-methoxyflavylium chloride (petunidin) 3,5,7-Trihydroxy-2-(4-hydroxyphenyl)-1-benzopyrilium chloride (pelargonidin) |
3,3′,4′,5,7-Pentahydroxy-flavylium chloride (cyanidin) 3,4′,5,7-Tetrahydroxy-3′-methoxyflavylium chloride (peonidin) 3,4′,5,7-Tetrahydroxy-3′,5′-dimethoxyflavylium chloride (malvidin) 3,5,7-Trihydroxy-2-(3,4,5,trihydroxyphenyl)-1-benzopyrylium chloride (delphinidin) 3,3′4′,5,7-Pentahydroxy-5′-methoxyflavylium chloride (petunidin) 3,5,7-Trihydroxy-2-(4-hydroxyphenyl)-1-benzopyrilium chloride (pelargonidin) |
| Chemical formula |
Cyanidin: C15H11O6Cl Peonidin: C16H13O6Cl Malvidin: C17H15O7Cl Delphinidin: C15H11O7Cl Petunidin: C16H13O7Cl Pelargonidin: C15H11O5Cl |
Cyanidin: C15H11O6Cl Peonidin: C16H13O6Cl Malvidin: C17H15O7Cl Delphinidin: C15H11O7Cl Petunidin: C16H13O7Cl Pelargonidin: C15H11O5Cl |
| Molecular weight |
Cyanidin: 322,6 Peonidin: 336,7 Malvidin: 366,7 Delphinidin: 340,6 Petunidin: 352,7 Pelargonidin: 306,7 |
Cyanidin: 322,6 Peonidin: 336,7 Malvidin: 366,7 Delphinidin: 340,6 Petunidin: 352,7 Pelargonidin: 306,7 |
| Assay |
Image omitted; see official source 300 for the pure pigment at 515-535 nm at pH 3,0 |
Image omitted; see official source 300 for the pure pigment at 515-535 nm at pH 3,0 |
| Description |
Purplish-red liquid, powder or paste, having a slight characteristic odour |
Purplish-red liquid, powder or paste, having a slight characteristic odour |
| Identification |
Identification |
Identification |
| Spectrometry |
Maximum in methanol with 0,01 % conc. HCl Cyanidin: 535 nm Peonidin: 532 nm Malvidin: 542 nm Delphinidin: 546 nm Petunidin: 543 nm Pelargonidin: 530 nm |
Maximum in methanol with 0,01 % conc. HCl Cyanidin: 535 nm Peonidin: 532 nm Malvidin: 542 nm Delphinidin: 546 nm Petunidin: 543 nm Pelargonidin: 530 nm |
| Purity |
Purity |
Purity |
| Solvent residues |
Methanol |
Not more than 50 mg/kg |
| Solvent residues |
Ethanol |
Not more than 200 mg/kg |
| Sulfur dioxide |
Not more than 1 000 mg/kg per percent pigment |
Not more than 1 000 mg/kg per percent pigment |
| Arsenic |
Not more than 3 mg/kg |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
Not more than 1 mg/kg |
| Cadmium |
Not more than 1 mg/kg |
Not more than 1 mg/kg |
Aluminium lakes of this colour may be used.
E 170 CALCIUM CARBONATE
|
|
| Synonyms |
CI Pigment White 18; Chalk |
| Definition |
Calcium carbonate is the product obtained from ground limestone or by the precipitation of calcium ions with carbonate ions. |
| Colour Index No |
77220 |
| Einecs |
Calcium carbonate: 207-439-9 Limestone: 215-279-6 |
| Chemical name |
Calcium carbonate |
| Chemical formula |
CaCO3 |
| Molecular weight |
100,1 |
| Assay |
Content not less than 98 % on the anhydrous basis |
| Description |
White crystalline or amorphous, odourless and tasteless powder |
| Identification |
Identification |
| Solubility |
Practically insoluble in water and in alcohol. Dissolves with effervescence in diluted acetic acid, in diluted hydrochloric acid and in diluted nitric acid, and the resulting solutions, after boiling, give positive tests for calcium. |
| Purity |
Purity |
| Loss on drying |
Not more than 2,0 % (200 °C, 4 hours) |
| Acid-insoluble substances |
Not more than 0,2 % |
| Magnesium and alkali salts |
Not more than 1 % |
| Fluoride |
Not more than 50 mg/kg |
| Antimony (as Sb) |
Image omitted; see official source Not more than 100 mg/kg, singly or in combination |
| Copper (as Cu) |
Image omitted; see official source Not more than 100 mg/kg, singly or in combination |
| Chromium (as Cr) |
Image omitted; see official source Not more than 100 mg/kg, singly or in combination |
| Zinc (as Zn) |
Image omitted; see official source Not more than 100 mg/kg, singly or in combination |
| Barium (as Ba) |
Image omitted; see official source Not more than 100 mg/kg, singly or in combination |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 3 mg/kg |
| Cadmium |
Not more than 1 mg/kg |
E 171 TITANIUM DIOXIDE
|
|
| Synonyms |
CI Pigment White 6 |
| Definition |
Titanium dioxide consists essentially of pure anatase and/or rutile titanium dioxide which may be coated with small amounts of alumina and/or silica to improve the technological properties of the product. The anatase grades of pigmentary titanium dioxide can only be made by the sulphate process which creates a large amount of sulphuric acid as a by-product. The rutile grades of titanium dioxide are typically made by the chloride process. Certain rutile grades of titanium dioxide are produced using mica (also known as potassium aluminum silicate) as a template to form the basic platelet structure. The surface of the mica is coated with titanium dioxide using a specialised patented process. Rutile titanium dioxide, platelet form is manufactured by subjecting titanium dioxide (rutile) coated mica nacreous pigment to an extractive dissolution in acid followed by an extractive dissolution in alkali. All of the mica is removed during this process and the resulting product is a platelet form of rutile titanium dioxide. |
| Colour Index No |
77891 |
| Einecs |
236-675-5 |
| Chemical name |
Titanium dioxide |
| Chemical formula |
TiO2 |
| Molecular weight |
79,88 |
| Assay |
Content not less than 99 % on an alumina and silica-free basis |
| Description |
White to slightly coloured powder |
| Identification |
Identification |
| Solubility |
Insoluble in water and organic solvents. Dissolves slowly in hydrofluoric acid and in hot concentrated sulphuric acid. |
| Purity |
Purity |
| Loss on drying |
Not more than 0,5 % (105 °C, 3 hours) |
| Loss on ignition |
Not more than 1,0 % on a volatile matter free basis (800 °C) |
| Aluminium oxide and/or silicon dioxide |
Total not more than 2,0 % |
| Matter soluble in 0,5 N HCl |
Not more than 0,5 % on an alumina and silica-free basis and, in addition, for products containing alumina and/or silica, not more than 1,5 % on the basis of the product as sold. |
| Water soluble matter |
Not more than 0,5 % |
| Cadmium |
Not more than 1 mg/kg after an extraction with 0,5 N HCl. |
| Antimony |
Not more than 2 mg/kg after an extraction with 0,5 N HCl. |
| Arsenic |
Not more than 1 mg/kg after an extraction with 0,5 N HCl. |
| Lead |
Not more than 10 mg/kg after an extraction with 0,5 N HCl. |
| Mercury |
Not more than 1 mg/kg after an extraction with 0,5 N HCl. |
E 172 IRON OXIDES AND IRON HYDROXIDES
|
|
|
|
| Synonyms |
Iron Oxide Yellow: CI Pigment Yellow 42 and 43 |
Iron Oxide Yellow: CI Pigment Yellow 42 and 43 |
|
| Synonyms |
Iron Oxide Red: CI Pigment Red 101 and 102 |
Iron Oxide Red: CI Pigment Red 101 and 102 |
|
| Synonyms |
Iron Oxide Black: CI Pigment Black 11 |
Iron Oxide Black: CI Pigment Black 11 |
|
| Synonyms |
Definition |
Iron oxides and iron hydroxides are produced synthetically and consist essentially of anhydrous and/or hydrated iron oxides. The range of hues includes yellows, reds, browns and blacks. Food quality iron oxides are primarily distinguished from technical grades by the comparatively low levels of contamination by other metals. This is achieved by the selection and control of the source of the iron and/or by the extent of chemical purification during the manufacturing process. |
Iron oxides and iron hydroxides are produced synthetically and consist essentially of anhydrous and/or hydrated iron oxides. The range of hues includes yellows, reds, browns and blacks. Food quality iron oxides are primarily distinguished from technical grades by the comparatively low levels of contamination by other metals. This is achieved by the selection and control of the source of the iron and/or by the extent of chemical purification during the manufacturing process. |
| Colour Index No |
Iron Oxide Yellow: |
77492 |
|
| Colour Index No |
Iron Oxide Red: |
77491 |
|
| Colour Index No |
Iron Oxide Black: |
77499 |
|
| Einecs |
Iron Oxide Yellow: |
257-098-5 |
|
| Einecs |
Iron Oxide Red: |
215-168-2 |
|
| Einecs |
Iron Oxide Black: |
235-442-5 |
|
| Chemical name |
Iron Oxide Yellow: hydrated ferric oxide, hydrated iron (III) oxide |
Iron Oxide Yellow: hydrated ferric oxide, hydrated iron (III) oxide |
|
| Chemical name |
Iron Oxide Red: anhydrous ferric oxide, anhydrous iron (III) oxide |
Iron Oxide Red: anhydrous ferric oxide, anhydrous iron (III) oxide |
|
| Chemical name |
Iron Oxide Black: ferroso ferric oxide, iron (II, III) oxide |
Iron Oxide Black: ferroso ferric oxide, iron (II, III) oxide |
|
| Chemical formula |
Iron Oxide Yellow: |
FeO(OH) · H2O |
|
| Chemical formula |
Iron Oxide Red: |
Fe2O3 |
|
| Chemical formula |
Iron Oxide Black: |
FeO.Fe2O3 |
|
| Molecular weight |
88,85: |
FeO(OH) |
|
| Molecular weight |
159,70: |
Fe2O3 |
|
| Molecular weight |
231,55: |
FeO.Fe2O3 |
|
| Assay |
Yellow not less than 60 %, red and black not less than 68 % total iron, expressed as iron |
Yellow not less than 60 %, red and black not less than 68 % total iron, expressed as iron |
|
| Description |
Powder; yellow, red, brown or black in hue |
Powder; yellow, red, brown or black in hue |
|
| Identification |
Identification |
Identification |
|
| Solubility |
Insoluble in water and in organic solvents Soluble in concentrated mineral acids |
Insoluble in water and in organic solvents Soluble in concentrated mineral acids |
|
| Purity |
Purity |
Purity |
|
| Water soluble matter |
Not more than 1,0 % |
Image omitted; see official source By total dissolution |
|
| Arsenic |
Not more than 3 mg/kg |
Image omitted; see official source By total dissolution |
|
| Cadmium |
Not more than 1 mg/kg |
Image omitted; see official source By total dissolution |
|
| Chromium |
Not more than 100 mg/kg |
Image omitted; see official source By total dissolution |
|
| Copper |
Not more than 50 mg/kg |
Image omitted; see official source By total dissolution |
|
| Lead |
Not more than 10 mg/kg |
Image omitted; see official source By total dissolution |
|
| Mercury |
Not more than 1 mg/kg |
Image omitted; see official source By total dissolution |
|
| Nickel |
Not more than 200 mg/kg |
Image omitted; see official source By total dissolution |
|
| Zinc |
Not more than 100 mg/kg |
Image omitted; see official source By total dissolution |
|
E 173 ALUMINIUM
|
|
| Synonyms |
CI Pigment Metal |
| Definition |
Aluminium powder is composed of finely divided particles of aluminium. The grinding may or may not be carried out in the presence of edible vegetable oils and/or food additive quality fatty acids. It is free from admixture with substances other than edible vegetable oils and/or food additive quality fatty acids. |
| Colour Index No |
77000 |
| Einecs |
231-072-3 |
| Chemical name |
Aluminium |
| Chemical formula |
Al |
| Atomic weight |
26,98 |
| Assay |
Not less than 99 % calculated as Al on an oil-free basis |
| Description |
A silvery-grey powder or tiny sheets |
| Identification |
Identification |
| Solubility |
Insoluble in water and in organic solvents. Soluble in dilute hydrochloric acid. |
| Test for aluminium |
A sample dissolved in dilute hydrochloric acid passes test |
| Purity |
Purity |
| Loss on drying |
Not more than 0,5 % (105 °C, to constant weight) |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 10 mg/kg |
| Mercury |
Not more than 1 mg/kg |
| Cadmium |
Not more than 1 mg/kg |
E 174 SILVER
|
|
| Synonyms |
Argentum |
| Definition |
Definition |
| Colour Index No |
77820 |
| Einecs |
231-131-3 |
| Chemical name |
Silver |
| Chemical formula |
Ag |
| Atomic weight |
107,87 |
| Assay |
Content not less than 99,5 % Ag |
| Description |
Silver-coloured powder or tiny sheets |
| Identification |
|
| Purity |
|
E 175 GOLD
|
|
|
| Synonyms |
Pigment Metal 3; Aurum |
Pigment Metal 3; Aurum |
| Definition |
Definition |
Definition |
| Colour Index No |
77480 |
77480 |
| Einecs |
231-165-9 |
231-165-9 |
| Chemical name |
Gold |
Gold |
| Chemical formula |
Au |
Au |
| Atomic weight |
197,0 |
197,0 |
| Assay |
Content not less than 90 % Au |
Content not less than 90 % Au |
| Description |
Gold-coloured powder or tiny sheets |
Gold-coloured powder or tiny sheets |
| Identification |
|
|
| Purity |
Purity |
Purity |
| Silver |
Not more than 7 % |
Image omitted; see official source After complete dissolution |
| Copper |
Not more than 4 % |
Image omitted; see official source After complete dissolution |
E 180 LITHOLRUBINE BK
|
|
| Synonyms |
CI Pigment Red 57; Rubinpigment; Carmine 6B |
| Definition |
Lithol Rubine BK consists essentially of calcium 3-hydroxy-4-(4-methyl-2-sulfonatophenylazo)-2-naphthalenecarboxylate and subsidiary colouring matters together with water, calcium chloride and/or calcium sulphate as the principal uncoloured components. |
| Colour Index No |
15850:1 |
| Einecs |
226-109-5 |
| Chemical name |
Calcium 3-hydroxy-4-(4-methyl-2-sulfonatophenylazo)-2-naphthalene-carboxylate |
| Chemical formula |
C18H12CaN2O6S |
| Molecular weight |
424,45 |
| Assay |
Content not less than 90 % total colouring matters Image omitted; see official source 200 at ca. 442 nm in dimethylformamide |
| Description |
Red powder |
| Identification |
Identification |
| Spectrometry |
Maximum in dimethylformamide at ca. 442 nm |
| Purity |
Purity |
| Subsidiary colouring matters |
Not more than 0,5 % |
| Organic compounds other than colouring matters: |
|
| 2-Amino-5-methylbenzenesulfonic acid, calcium salt |
Not more than 0,2 % |
| 3-hydroxy-2-naphthalenecarboxylic acid, calcium salt |
Not more than 0,4 % |
| Unsulfonated primary aromatic amines |
Not more than 0,01 % (expressed as aniline) |
| Ether extractable matter |
From a solution of pH 7, not more than 0,2 % |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
| Cadmium |
Not more than 1 mg/kg |
Aluminium lakes of this colour may be used.
E 200 SORBIC ACID
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
203-768-7 |
| Chemical name |
Sorbic acid; trans, trans-2,4-Hexadienoic acid |
| Chemical formula |
C6H8O2 |
| Molecular weight |
112,12 |
| Assay |
Content not less than 99 % on the anhydrous basis |
|
|
| Description |
Colourless needles or white free flowing crystalline powder, having a slight characteristic odour and showing no change in colour after heating for 90 minutes at 105 °C |
|
|
| Identification |
Identification |
| Melting range |
Between 133 °C and 135 °C, after vacuum drying for four hours in a sulphuric acid desiccator |
| Spectrometry |
A propan-2-ol solution (1 in 4 000 000 ) shows absorbance maximum at 254 ± 2 nm |
| Test for double bonds |
Passes test |
| Solubility |
Slightly soluble in water, soluble in ethanol. |
|
|
| Purity |
Purity |
| Water content |
Not more than 0,5 % (Karl Fischer method) |
| Sulphated ash |
Not more than 0,2 % |
| Aldehydes |
Not more than 0,1 % (as formaldehyde) |
| Arsenic |
Not more than 0,1 mg/kg |
| Lead |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,01 mg/kg |
| Zinc |
Not more than 0,1 mg/kg |
|
|
E 202 POTASSIUM SORBATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
246-376-1 |
| Chemical name |
Potassium sorbate; Potassium (E,E)-2,4-hexadienoate; Potassium salt of trans, trans 2,4-hexadienoic acid |
| Chemical formula |
C6H7O2K |
| Molecular weight |
150,22 |
| Assay |
Content not less than 99 % on the dried basis |
|
|
| Description |
White crystalline powder or granules showing no change in colour after heating for 90 minutes at 105 °C |
|
|
| Identification |
Identification |
| Melting range for sorbic acid |
Melting range of sorbic acid isolated by acidification and not recrystallised 133 °C to 135 °C after vacuum drying in a sulphuric acid desiccator |
| Test for potassium |
Passes test |
| Test for double bonds |
Passes test |
|
|
| Purity |
Purity |
| Loss on drying |
Not more than 1,0 % (105 °C, 3 hours) |
| Acidity or alkalinity |
Not more than about 1,0 % (as sorbic acid or K2CO3) |
| Aldehydes |
Not more than 0,1 %, calculated as formaldehyde |
| Arsenic |
Not more than 0,1 mg/kg |
| Lead |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,01 mg/kg |
| Zinc |
Not more than 0,1 mg/kg |
E 210 BENZOIC ACID
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
200-618-2 |
| Chemical name |
Benzoic acid; Benzenecarboxylic acid; Phenylcarboxylic acid |
| Chemical formula |
C7H6O2 |
| Molecular weight |
122,12 |
| Assay |
Content not less than 99,5 % on the anhydrous basis |
| Description |
White crystalline powder |
| Identification |
Identification |
| Melting range |
121,5 °C -123,5 °C |
| Sublimation test |
Passes test |
| Test for benzoate |
Passes test |
| pH |
About 4 (solution in water) |
| Purity |
Purity |
| Loss on drying |
Not more than 0,5 % (3 hours, over sulphuric acid) |
| Sulphated ash |
Not more than 0,05 % |
| Chlorinated organic compounds |
Not more than 0,07 % expressed as chloride corresponding to 0,3 % expressed as monochlorobenzoic acid |
| Readily oxidisable substances |
Add 1,5 ml of sulphuric acid to 100 ml of water, heat to boiling point and add 0,1 N KMnO4 in drops, until the pink colour persists for 30 seconds. Dissolve 1 g of the sample, weighed to the nearest mg, in the heated solution, and titrate with 0,1 N KMnO4 to a pink colour that persists for 15 seconds. Not more than 0,5 ml should be required |
| Readily carbonisable substances |
A cold solution of 0,5 g of benzoic acid in 5 ml of 94,5 to 95,5 % sulphuric acid must not show a stronger colouring than that of a reference liquid containing 0,2 ml of cobalt chloride TSC [^E0011], 0,3 ml of ferric chloride TSC [^E0012], 0,1 ml of copper sulphate TSC [^E0013] and 4,4 ml of water |
| Polycyclic acids |
On fractional acidification of a neutralised solution of benzoic acid, the first precipitate must not have a different melting point from that of the benzoic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
Cobalt chloride TSC: dissolve approximately 65 g of cobalt chloride CoCl2·6H2O in a sufficient quantity of a mixture of 25 ml hydrochloric acid and 975 ml of water to give a total volume of 1 litre. Place exactly 5 ml of this solution in a round-bottomed flask containing 250 ml of iodine solution, add 5 ml of 3 % hydrogen peroxide, then 15 ml of a 20 % solution of sodium hydroxide. Boil for 10 minutes, allow to cool, add 2 g of potassium iodide and 20 ml of 25 % sulphuric acid. After the precipitate is completely dissolved, titrate the liberated iodine with sodium thiosulphate (0,1 N) in the presence of starch TS. 1 ml of sodium thiosulphate (0,1 N) corresponds to 23,80 mg of CoCl2·6H2O. Adjust final volume of solution by the addition of a sufficient quantity of the hydrochloric acid/water mixture to give a solution containing 59,5 mg of CoCl2·6H2O per ml.
Ferric chloride TSC: dissolve approximately 55 g of ferric chloride in a sufficient quantity of a mixture of 25 ml of hydrochloric acid and 975 ml of water to give a total volume of 1 litre. Place 10 ml of this solution in a round-bottomed flask containing 250 ml of iodine solution, add 15 ml of water and 3 g of potassium iodide; leave the mixture to stand for 15 minutes. Dilute with 100 ml of water then titrate the liberated iodine with sodium thiosulphate (0,1 N) in the presence of starch TS. 1 ml of sodium thiosulphate (0,1 N) corresponds to 27,03 mg of FeCl3·6H2O. Adjust final volume of solution by the addition of a sufficient quantity of the hydrochloric acid/water to give a solution containing 45,0 mg of FeCl3·6H2O per ml.
Copper sulphate TSC: dissolve approximate by 65 g of copper sulphate CuSO4·5H2O in a sufficient quantity of a mixture of 25 ml of hydrochloric acid and 975 ml of water to give a total volume of 1 litre. Place 10 ml of this solution in a round-bottomed flask containing 250 ml of iodine solution, add 40 ml of water, 4 ml of acetic acid and 3 g of potassium iodide. Titrate the liberated iodine with sodium thiosulphate (0,1 N) in the presence of starch TS [^E0014]. 1 ml of sodium thiosulphate (0,1 N) corresponds to 24,97 mg of CuSO4·5H2O. Adjust final volume of solution by the addition of a sufficient quantity of the hydrochloric acid/water mixture to give a solution containing 62,4 mg of CuSO4·5H2O per ml.
Starch TS: triturate 0,5 g starch (potato starch, maize starch or soluable starch) with 5 ml of water; to the resulting paste add a sufficient quantity of water to give a total volume of 100 ml, stirring all the time. Boil for a few minutes, allow to cool, filter. The starch must be freshly prepared.
E 211 SODIUM BENZOATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
208-534-8 |
| Chemical name |
Sodium benzoate; Sodium salt of benzenecarboxylic acid; Sodium salt of phenylcarboxylic acid |
| Chemical formula |
C7H5O2Na |
| Molecular weight |
144,11 |
| Assay |
Not less than 99 % of C7H5O2Na, after drying at 105 °C for four hours |
| Description |
A white, almost odourless, crystalline powder or granules |
| Identification |
Identification |
| Solubility |
Freely soluble in water, sparingly soluble in ethanol |
| Melting range for benzoic acid |
Melting range of benzoic acid isolated by acidification and not recrystallised 121,5 °C to 123,5 °C, after drying in a sulphuric acid desiccator |
| Test for benzoate |
Passes test |
| Test for sodium |
Passes test |
| Purity |
Purity |
| Loss on drying |
Not more than 1,5 % (105 °C, 4 hours) |
| Readily oxidisable substances |
Add 1,5 ml of sulphuric acid to 100 ml of water, heat to boiling point and add 0,1 N KMnO4 in drops, until the pink colour persists for 30 seconds. Dissolve 1 g of the sample, weighed to the nearest mg, in the heated solution, and titrate with 0,1 N KMnO4 to a pink colour that persists for 15 seconds. Not more than 0,5 ml should be required |
| Polycyclic acids |
On fractional acidification of a (neutralised) solution of sodium benzoate, the first precipitate must not have a different melting range from that of benzoic acid |
| Chlorinated organic compounds |
Not more than 0,06 % expressed as chloride, corresponding to 0,25 % expressed as monochlorobenzoic acid |
| Acidity or alkalinity |
Neutralisation of 1 g of sodium benzoate, in the presence of phenolphthalein, must not require more than 0,25 ml of 0,1 N NaOH or 0,1 N HCl |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 212 POTASSIUM BENZOATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
209-481-3 |
| Chemical name |
Potassium benzoate; Potassium salt of benzenecarboxylic acid; Potassium salt of phenylcarboxylic acid |
| Chemical formula |
C7H5KO2·3H2O |
| Molecular weight |
214,27 |
| Assay |
Content not less than 99 % C7H5KO2 after drying at 105 °C to constant weight |
| Description |
White crystalline powder |
| Identification |
Identification |
| Melting range for benzoic acid |
Melting range of benzoic acid isolated by acidification and not recrystallised 121,5 °C to 123,5 °C, after vacuum drying in a sulphuric acid desiccator |
| Test for benzoate |
Passes test |
| Test for potassium |
Passes test |
| Purity |
Purity |
| Loss on drying |
Not more than 26,5 % (105 °C, 4 hours) |
| Chlorinated organic compounds |
Not more than 0,06 % expressed as chloride, corresponding to 0,25 % expressed as monochlorobenzoic acid |
| Readily oxidisable substances |
Add 1,5 ml of sulphuric acid to 100 ml of water, heat to boiling point and add 0,1 N KMnO4 in drops, until the pink colour persists for 30 seconds. Dissolve 1 g of the sample, weighed to the nearest mg, in the heated solution, and titrate with 0,1 N KMnO4 to a pink colour that persists for 15 seconds. Not more than 0,5 ml should be required |
| Readily carbonisable substances |
A cold solution of 0,5 g of benzoic acid in 5 ml 94,5 to 95,5 % sulphuric acid must not show a stronger colouring than that of a reference liquid containing 0,2 ml of cobalt chloride TSC, 0,3 ml of ferric chloride TSC, 0,1 ml of copper sulphate TSC and 4,4 ml of water |
| Polycyclic acids |
On fractional acidification of a (neutralised) solution of potassium benzoate, the first precipitate must not have a different melting range from that of benzoic acid |
| Acidity or alkalinity |
Neutralisation of 1 g of potassium benzoate, in the presence of phenolphthalein, must not require more than 0,25 ml of 0,1 N NaOH or 0,1 N HCl |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 213 CALCIUM BENZOATE
|
|
|
| Synonyms |
Monocalcium benzoate |
Monocalcium benzoate |
| Definition |
Definition |
Definition |
| Einecs |
218-235-4 |
218-235-4 |
| Chemical name |
Calcium benzoate; Calcium dibenzoate |
Calcium benzoate; Calcium dibenzoate |
| Chemical formula |
Anhydrous: |
C14H10O4Ca |
| Chemical formula |
Monohydrate: |
C14H10O4Ca·H2O |
| Chemical formula |
Trihydrate: |
C14H10O4Ca·3H2O |
| Molecular weight |
Anhydrous: |
282,31 |
| Molecular weight |
Monohydrate: |
300,32 |
| Molecular weight |
Trihydrate: |
336,36 |
| Assay |
Content not less than 99 % after drying at 105 °C |
Content not less than 99 % after drying at 105 °C |
| Description |
White or colourless crystals, or white powder |
White or colourless crystals, or white powder |
| Identification |
Identification |
Identification |
| Melting range for benzoic acid |
Melting range of benzoic acid isolated by acidification and not recrystallised 121,5 °C to 123,5 °C, after vacuum drying in a sulphuric acid desiccator |
Melting range of benzoic acid isolated by acidification and not recrystallised 121,5 °C to 123,5 °C, after vacuum drying in a sulphuric acid desiccator |
| Test for benzoate |
Passes test |
Passes test |
| Test for calcium |
Passes test |
Passes test |
| Purity |
Purity |
Purity |
| Loss on drying |
Not more than 17,5 % (105 °C, to constant weight) |
Not more than 17,5 % (105 °C, to constant weight) |
| Water insoluble matter |
Not more than 0,3 % |
Not more than 0,3 % |
| Chlorinated organic compounds |
Not more than 0,06 % expressed as chloride, corresponding to 0,25 % expressed as monochlorobenzoic acid |
Not more than 0,06 % expressed as chloride, corresponding to 0,25 % expressed as monochlorobenzoic acid |
| Readily oxidisable substances |
Add 1,5 ml of sulphuric acid to 100 ml of water, heat to boiling point and add 0,1 N KMnO4 in drops, until the pink colour persists for 30 seconds. Dissolve 1 g of the sample, weighed to the nearest mg, in the heated solution, and titrate with 0,1 N KMnO4 to a pink colour that persists for 15 seconds. Not more than 0,5 ml should be required |
Add 1,5 ml of sulphuric acid to 100 ml of water, heat to boiling point and add 0,1 N KMnO4 in drops, until the pink colour persists for 30 seconds. Dissolve 1 g of the sample, weighed to the nearest mg, in the heated solution, and titrate with 0,1 N KMnO4 to a pink colour that persists for 15 seconds. Not more than 0,5 ml should be required |
| Readily carbonisable substances |
Cold solution of 0,5 g of benzoic acid in 5 ml of 94,5 to 95,5 % sulphuric acid must not show a stronger colouring than that of a reference liquid containing 0,2 ml of cobalt chloride TSC, 0,3 ml of ferric chloride TSC, 0,1 ml of copper sulphate TSC and 4,4 ml of water |
Cold solution of 0,5 g of benzoic acid in 5 ml of 94,5 to 95,5 % sulphuric acid must not show a stronger colouring than that of a reference liquid containing 0,2 ml of cobalt chloride TSC, 0,3 ml of ferric chloride TSC, 0,1 ml of copper sulphate TSC and 4,4 ml of water |
| Polycyclic acids |
On fractional acidification of a (neutralised) solution of calcium benzoate, the first precipitate must not be a different melting range from that of benzoic acid |
On fractional acidification of a (neutralised) solution of calcium benzoate, the first precipitate must not be a different melting range from that of benzoic acid |
| Acidity or alkalinity |
Neutralisation of 1 g of calcium benzoate, in the presence of phenolphthalein, must not require more than 0,25 ml of 0,1 N NaOH or 0,1 N HCl |
Neutralisation of 1 g of calcium benzoate, in the presence of phenolphthalein, must not require more than 0,25 ml of 0,1 N NaOH or 0,1 N HCl |
| Fluoride |
Not more than 10 mg/kg |
Not more than 10 mg/kg |
| Arsenic |
Not more than 3 mg/kg |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
Not more than 1 mg/kg |
E 214 ETHYL p-HYDROXYBENZOATE
|
|
| Synonyms |
Ethylparaben; Ethyl p-oxybenzoate |
| Definition |
Definition |
| Einecs |
204-399-4 |
| Chemical name |
Ethyl-p-hydroxybenzoate; Ethyl ester of p-hydroxybenzoic acid |
| Chemical formula |
C9H10O3 |
| Molecular weight |
166,8 |
| Assay |
Content not less than 99,5 % after drying for two hours at 80 °C |
| Description |
Almost odourless, small, colourless crystals or a white, crystalline powder |
| Identification |
Identification |
| Melting range |
115-118 °C |
| Test for p-hydroxybenzoate |
Melting range of p-hydroxybenzoic acid isolated by acidification and not recrystallised: 213 °C to 217 °C, after vacuum drying in a sulphuric acid desiccator |
| Test for alcohol |
Passes test |
| Purity |
Purity |
| Loss on drying |
Not more than 0,5 % (80 °C, 2 hours) |
| Sulphated ash |
Not more than 0,05 % |
| p-Hydroxybenzoic acid and salicylic acid |
Not more than 0,35 % expressed as p-hydroxybenzoic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 215 SODIUM ETHYL p-HYDROXYBENZOATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
252-487-6 |
| Chemical name |
Sodium ethyl p-hydroxybenzoate; Sodium compound of the ethyl ester of p-hydroxybenzoic acid |
| Chemical formula |
C9H9O3Na |
| Molecular weight |
188,8 |
| Assay |
Content of ethylester of p-hydroxybenzoic acid not less than 83 % on the anhydrous basis |
| Description |
White, crystalline hygroscopic powder |
| Identification |
Identification |
| Melting range |
115 °C to 118 °C, after vacuum drying in a sulphuric acid desiccator |
| Test for p-hydroxybenzoate |
Melting range of p-hydroxybenzoic acid derived from the sample is 213 °C to 217 °C |
| Test for sodium |
Passes test |
| pH |
9,9-10,3 (0,1 % aqueous solution) |
| Purity |
Purity |
| Loss on drying |
Not more than 5 %, (by vacuum drying in a sulphuric acid desiccator) |
| Sulphated ash |
37 to 39 % |
| p-Hydroxybenzoic acid and salicylic acid |
Not more than 0,35 % expressed as p-hydroxybenzoic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 218 METHYL p-HYDROXYBENZOATE
|
|
| Synonyms |
Methylparaben; Methyl-p-oxybenzoate |
| Definition |
Definition |
| Einecs |
243-171-5 |
| Chemical name |
Methyl p-hydroxybenzoate; Methyl ester of p-hydroxybenzoic acid |
| Chemical formula |
C8H8O3 |
| Molecular weight |
152,15 |
| Assay |
Content not less than 99 % after drying for two hours at 80 °C |
| Description |
Almost odourless, small colourless crystals or white crystalline powder |
| Identification |
Identification |
| Melting range |
125 °C - 128 °C |
| Test for p-hydroxybenzoate |
Melting range of p-hydroxybenzoic acid derived from the sample is 213 °C to 217 °C after drying for two hours at 80 °C |
| Purity |
Purity |
| Loss on drying |
Not more than 0,5 % (80 °C, 2 hours) |
| Sulphated ash |
Not more than 0,05 % |
| p-Hydroxybenzoic acid and salicylic acid |
Not more than 0,35 % expressed as p-hydroxybenzoic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 219 SODIUM METHYL p-HYDROXYBENZOATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
|
| Chemical name |
Sodium methyl p-hydroxybenzoate; Sodium compound of the methylester of p-hydroxybenzoic acid |
| Chemical formula |
C8H7O3Na |
| Molecular weight |
174,15 |
| Assay |
Content not less than 99,5 % on the anhydrous basis |
| Description |
White, hygroscopic powder |
| Identification |
Identification |
| Melting range |
The white precipitate formed by acidifying with hydrochloric acid a 10 % (w/v) aqueous solution of the sodium derivative of methyl p-hydroxybenzoate (using litmus paper as indicator) shall, when washed with water and dried at 80 °C for two hours, have a melting range of 125 °C to 128 °C |
| Test for sodium |
Passes test |
| pH |
9,7-10,3 (0,1 % solution in carbon dioxide free water) |
| Purity |
Purity |
| Water content |
Not more than 5 % (Karl Fischer method) |
| Sulphated ash |
40 % to 44,5 % on the anhydrous basis |
| p-Hydroxybenzoic acid and salicylic acid |
Not more than 0,35 % expressed as p-hydroxybenzoic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 220 SULPHUR DIOXIDE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
231-195-2 |
| Chemical name |
Sulphur dioxide; Sulphurous acid anhydride |
| Chemical formula |
SO2 |
| Molecular weight |
64,07 |
| Assay |
Content not less than 99 % |
| Description |
Colourless, non-flammable gas with strong pungent suffocating odour |
| Identification |
Identification |
| Test for sulphurous substances |
Passes test |
| Purity |
Purity |
| Water content |
Not more than 0,05 % (Karl Fischer method) |
| Non-volatile residue |
Not more than 0,01 % |
| Sulphur trioxide |
Not more than 0,1 % |
| Selenium |
Not more than 10 mg/kg |
| Other gases not normally present in the air |
No trace |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 5 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 221 SODIUM SULPHITE
|
|
|
| Synonyms |
|
|
| Definition |
Definition |
Definition |
| Einecs |
231-821-4 |
231-821-4 |
| Chemical name |
Sodium sulphite (anhydrous or heptahydrate) |
Sodium sulphite (anhydrous or heptahydrate) |
| Chemical formula |
Anhydrous: |
Na2SO3 |
| Chemical formula |
Heptahydrate: |
Na2SO37H2O |
| Molecular weight |
Anhydrous: |
126,04 |
| Molecular weight |
Heptahydrate: |
252,16 |
| Assay |
Anhydrous: |
Not less than 95 % of Na2SO3 and not less than 48 % of SO2 |
| Assay |
Heptahydrate: |
Not less than 48 % of Na2SO3 and not less than 24 % of SO2 |
| Description |
White crystalline powder or colourless crystals |
White crystalline powder or colourless crystals |
| Identification |
Identification |
Identification |
| Test for sulphite |
Passes test |
Passes test |
| Test for sodium |
Passes test |
Passes test |
| pH |
8,5-11,5 (anhydrous: 10 % solution; heptahydrate: 20 % solution) |
8,5-11,5 (anhydrous: 10 % solution; heptahydrate: 20 % solution) |
| Purity |
Purity |
Purity |
| Thiosulphate |
Not more than 0,1 % based on the SO2 content |
Not more than 0,1 % based on the SO2 content |
| Iron |
Not more than 10 mg/kg based on the SO2 content |
Not more than 10 mg/kg based on the SO2 content |
| Selenium |
Not more than 5 mg/kg based on the SO2 content |
Not more than 5 mg/kg based on the SO2 content |
| Arsenic |
Not more than 3 mg/kg |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
Not more than 1 mg/kg |
E 222 SODIUM HYDROGEN SULPHITE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
231-921-4 |
| Chemical name |
Sodium bisulphite; Sodium hydrogen sulphite |
| Chemical formula |
NaHSO3 in aqueous solution |
| Molecular weight |
104,06 |
| Assay |
Content not less than 32 % w/w NaHSO3 |
| Description |
A clear, colourless to yellow solution |
| Identification |
Identification |
| Test for sulphite |
Passes test |
| Test for sodium |
Passes test |
| pH |
2,5-5,5 (10 % aqueous solution) |
| Purity |
Purity |
|
|
| Iron |
Not more than 10 mg/kg based on the SO2 content |
|
|
| Selenium |
Not more than 5 mg/kg based on the SO2 content |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
|
|
| Synonyms |
Pyrosulphite; Sodium pyrosulphite |
| Definition |
Definition |
| Einecs |
231-673-0 |
| Chemical name |
Sodium disulphite; Disodium pentaoxodisulphate |
| Chemical formula |
Na2S2O5 |
| Molecular weight |
190,11 |
| Assay |
Content not less than 95 % Na2S2O5 and not less than 64 % of SO2 |
| Description |
White crystals or crystalline powder |
| Identification |
Identification |
| Test for sulphite |
Passes test |
| Test for sodium |
Passes test |
| pH |
4,0-5,5 (10 % aqueous solution) |
| Purity |
Purity |
| Thiosulphate |
Not more than 0,1 % based on the SO2 content |
| Iron |
Not more than 10 mg/kg based on the SO2 content |
| Selenium |
Not more than 5 mg/kg based on the SO2 content |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
|
|
| Synonyms |
Potassium pyrosulphite |
| Definition |
Definition |
| Einecs |
240-795-3 |
| Chemical name |
Potassium disulphite; Potassium pentaoxo disulphate |
| Chemical formula |
K2S2O5 |
| Molecular weight |
222,33 |
| Assay |
Content not less than 90 % K2S2O5 and not less than 51,8 % of SO2, the remainder being composed almost entirely of potassium sulphate |
| Description |
Colourless crystals or white crystalline powder |
| Identification |
Identification |
| Test for sulphite |
Passes test |
| Test for potassium |
Passes test |
| Purity |
Purity |
| Thiosulphate |
Not more than 0,1 % based on the SO2 content |
| Iron |
Not more than 10 mg/kg based on the SO2 content |
| Selenium |
Not more than 5 mg/kg based on the SO2 content |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 226 CALCIUM SULPHITE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
218-235-4 |
| Chemical name |
Calcium sulphite |
| Chemical formula |
CaSO3·2H2O |
| Molecular weight |
156,17 |
| Assay |
Content not less than 95 % of CaSO3·2H2O and not less than 39 % of SO2 |
| Description |
White crystals or white crystalline powder |
| Identification |
Identification |
| Test for sulphite |
Passes test |
| Test for calcium |
Passes test |
| Purity |
Purity |
| Iron |
Not more than 10 mg/kg based on the SO2 content |
| Selenium |
Not more than 5 mg/kg based on the SO2 content |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 227 CALCIUM HYDROGEN SULPHITE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
237-423-7 |
| Chemical name |
Calcium bisulphite; Calcium hydrogen sulphite |
| Chemical formula |
Ca(HSO3)2 |
| Molecular weight |
202,22 |
| Assay |
6 to 8 % (w/v) of sulphur dioxide and 2,5 to 3,5 % (w/v) of calcium dioxide corresponding to 10 to 14 % (w/v) of calcium bisulphite [Ca(HSO3)2] |
| Description |
Clear greenish-yellow aqueous solution having a distinct odour of sulphur dioxide |
| Identification |
Identification |
| Test for sulphite |
Passes test |
| Test for calcium |
Passes test |
| Purity |
Purity |
| Iron |
Not more than 10 mg/kg based on the SO2 content |
| Selenium |
Not more than 5 mg/kg based on the SO2 content |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 228 POTASSIUM HYDROGEN SULPHITE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
231-870-1 |
| Chemical name |
Potassium bisulphite; Potassium hydrogen sulphite |
| Chemical formula |
KHSO3 in aqueous solution |
| Molecular weight |
120,17 |
| Assay |
Content not less than 280 g KHSO3 per litre (or 150 g SO2 per litre) |
| Description |
Clear colourless aqueous solution |
| Identification |
Identification |
| Test for sulphite |
Passes test |
| Test for potassium |
Passes test |
| Purity |
Purity |
| Iron |
Not more than 10 mg/kg based on the SO2 content |
| Selenium |
Not more than 5 mg/kg based on the SO2 content |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 234 NISIN
|
|
| Synonyms |
|
| Definition |
Nisin consists of several closely related polypeptides produced by strains of Lactococcus lactis subsp. lactis |
| Einecs |
215-807-5 |
| Chemical name |
|
| Chemical formula |
C143H230N42O37S7 |
| Molecular weight |
3 354,12 |
| Assay |
Nisin concentrate contains not less than 900 units per mg in a mixture of non-fat milk solids and a minimum sodium chloride content of 50 % |
| Description |
White powder |
| Identification |
|
| Purity |
Purity |
| Loss on drying |
Not more than 3 % (102 °C to 103 °C, to constant weight) |
| Arsenic |
Not more than 1 mg/kg |
| Lead |
Not more than 1 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 235 NATAMYCIN
|
|
| Synonyms |
Pimaricin |
| Definition |
Natamycin is a fungicide of the polyene macrolide group, and is produced by strains of Streptomyces natalensis and other relevant species |
| Einecs |
231-683-5 |
| Chemical name |
A stereoisomer of 22-(3-Amino-3,6-dideoxy-β-D- mannopyranosyloxy)-1,3,26-trihydroxy-12-methyl-10-oxo-6,11,28-trioxatricyclo[22.3.1.05,7]octacosa-8,14,16,18,20-pentaene-25-carboxylic acid. |
| Chemical formula |
C33H47O13N |
| Molecular weight |
665,74 |
| Assay |
Content not less than 95 % on the dried basis |
| Description |
White to creamy-white crystalline powder |
| Identification |
Identification |
| Colour reactions |
On adding a few crystals of natamycin on a spot plate, to a drop of: concentrated hydrochloric acid, a blue colour develops, concentrated phosphoric acid, a green colour develops,which changes into pale red after a few minutes |
| Spectrometry |
A 0,0005 % w/v solution in 1 % methanolic acetic acid solution has absorption maxima at about 290 nm, 303 nm and 318 nm, a shoulder at about 280 nm and exhibits minima at about 250 nm, 295,5 nm and 311 nm |
| pH |
5,5-7,5 (1 % w/v solution in previously neutralised mixture of 20 parts dimethylformamide and 80 parts of water) |
| Specific rotation |
[α]D 20 + 250° to + 295° (a 1 % w/v solution in glacial acetic acid, at 20 °C and calculated with reference to the dried material) |
| Purity |
Purity |
| Loss on drying |
Not more than 8 % (over P2O5, in vacuum at 60 °C to constant weight) |
| Sulphated ash |
Not more than 0,5 % |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
| Microbiological criteria |
Microbiological criteria |
| Total plate count |
Not more than 100 colonies per gram |
E 239 HEXAMETHYLENE TETRAMINE
|
|
| Synonyms |
Hexamine; Methenamine |
| Definition |
Definition |
| Einecs |
202-905-8 |
| Chemical name |
1,3,5,7-Tetraazatricyclo [3.3.1.13,7]-decane, hexamethylenetetramine |
| Chemical formula |
C6H12N4 |
| Molecular weight |
140,19 |
| Assay |
Content not less than 99 % on the anhydrous basis |
| Description |
Colourless or white crystalline powder |
| Identification |
Identification |
| Test for formaldehyde |
Passes test |
| Test for ammonia |
Passes test |
| Sublimation point: |
Approximately 260 °C |
| Purity |
Purity |
| Loss on drying |
Not more than 0,5 % (at 105 °C in vacuum over P2O5 for 2 hours) |
| Sulphated ash |
Not more than 0,05 % |
| Sulphates |
Not more than 0,005 % expressed as SO4 |
| Chlorides |
Not more than 0,005 % expressed as Cl |
| Ammonium salts |
Not detectable |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 242 DIMETHYL DICARBONATE
|
|
| Synonyms |
DMDC; Dimethyl pyrocarbonate |
| Definition |
Definition |
| Einecs |
224-859-8 |
| Chemical name |
Dimethyl dicarbonate; Pyrocarbonic acid dimethyl ester |
| Chemical formula |
C4H6O5 |
| Molecular weight |
134,09 |
| Assay |
Content not less than 99,8 % |
| Description |
Colourless liquid, decomposes in aqueous solution. It is corrosive to skin and eyes and toxic by inhalation and ingestion |
| Identification |
Identification |
| Decomposition |
After dilution positive tests for CO2 and methanol |
| Melting point |
17 °C |
| Boiling point |
172 °C with decomposition |
| Density 20 °C |
Approximately 1,25 g/cm3 |
| Infrared absorption spectrum |
Maxima at 1 156 and 1 832 cm-1 |
| Purity |
Purity |
| Dimethyl carbonate |
Not more than 0,2 % |
| Chlorine, total |
Not more than 3 mg/kg |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 243 ETHYL LAUROYL ARGINATE
|
|
| Synonyms |
Lauric arginate ethyl ester; lauramide arginine ethyl ester; ethyl-Να-lauroyl-L-arginate·HCl; LAE; |
|
|
| Definition |
Ethyl lauroyl arginate is synthesized by esterifying arginine with ethanol, followed by reacting the ester with lauroyl chloride, in aqueous media at a controlled temperature between 10 and 15 °C and at a pH between 6,7 and 6,9. The resultant ethyl lauroyl arginate is recovered as the hydrochloride salt, which is filtered and dried. |
|
|
| ELINCS |
434-630-6 |
| Chemical name |
Ethyl-Να-dodecanoyl-L-arginate·HCl |
| Chemical formula |
C20H41N4O3Cl |
| Molecular Weight |
421,02 |
| Assay |
Not less than 85 % and not more than 95 % |
| Description |
White powder |
| Identification |
|
| Solubility |
Freely soluble in water, ethanol, propylene glycol and glycerol |
| Purity |
|
| Να-Lauroyl-L-arginine |
Not more than 3 % |
| Lauric acid |
Not more than 5 % |
| Ethyl laurate |
Not more than 3 % |
| L-Arginine·HCl |
Not more than 1 % |
| Ethyl arginate·2HCl |
Not more than 1 % |
| Lead |
Not more than 1 mg/kg |
| Arsenic |
Not more than 3 mg/kg |
| Cadmium |
Not more than 1 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 246 GLYCOLIPIDS
|
|
| Synonyms |
|
| Definition |
The naturally occurring glycolipids are obtained by a fermentation process using the wild type strain MUCL 53181 of the fungus Dacryopinax spathularia (edible sweet osmanthus ear mushroom). Glucose is used as a carbon source. The solvent-free downstream process includes filtration and microfiltration to remove microbial cells, precipitation and washing with buffered water to purify. The product is pasteurized and spray-dried. The production process does not chemically modify the glycolipids or change their innate composition. |
| CAS number |
2205009-17-0 |
| Chemical name |
Glycolipids from Dacryopinax spathularia |
| Assay |
Not less than 93 % total glycolipid content on the dried basis. |
| Description |
Beige to light brown powder, weak characteristic odour |
| Identification |
|
| Solubility |
Complies (10 g/l in water) |
| pH |
Between 5,0 and 7,0 (10 g/l in water) |
| Turbidity |
Not more than 28 NTU (10 g/l in water) |
| Purity |
|
| Water content |
Not more than 5 % (Karl Fischer Method) |
| Protein |
Not more than 3 % (factor N x 6,25) |
| Fat |
Not more than 2 % (gravimetric) |
| Sodium |
Not more than 3,3 % |
| Arsenic |
Not more than 1 mg/kg |
| Lead |
Not more than 0,7 mg/kg |
| Cadmium |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,1 mg/kg |
| Nickel |
Not more than 2 mg/kg |
| Microbiological criteria |
|
| Total aerobic count |
Not more than 100 colonies per gram |
| Yeast and moulds |
Not more than 10 colonies per gram |
| Coliforms |
Not more than 3 MPN per gram |
| Salmonella spp. |
Absent in 25 g |
E 249 POTASSIUM NITRITE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
231-832-4 |
| Chemical name |
Potassium nitrite |
| Chemical formula |
KNO2 |
| Molecular weight |
85,11 |
| Assay |
Content not less than 95 % on the anhydrous basis [^E0015] |
| Description |
White or slightly yellow, deliquescent granules |
| Identification |
Identification |
| Test for nitrite |
Passes test |
| Test for potassium |
Passes test |
| pH |
6,0-9,0 (5 % solution) |
|
|
| Purity |
Purity |
| Loss on drying |
Not more than 3 % (4 hours, over silica gel) |
| Arsenic |
Not more than 0,1 mg/kg |
| Lead |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,1 mg/kg |
|
|
May only be sold in a mixture with salt or a salt substitute.
E 250 SODIUM NITRITE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
231-555-9 |
| Chemical name |
Sodium nitrite |
| Chemical formula |
NaNO2 |
| Molecular weight |
69,00 |
| Assay |
Content not less than 97 % on the anhydrous basis [^E0016] |
| Description |
White crystalline powder or yellowish lumps |
| Identification |
Identification |
| Test for nitrite |
Passes test |
| Test for sodium |
Passes test |
|
|
| Purity |
Purity |
| Loss on drying |
Not more than 0,25 % (4 hours, over silica gel) |
| Arsenic |
Not more than 0,1 mg/kg |
| Lead |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,1 mg/kg |
|
|
May only be sold in a mixture with salt or a salt substitute.
E 251 SODIUM NITRATE
(i) SOLID SODIUM NITRATE
|
|
| Synonyms |
Chile saltpetre; Cubic or soda nitre |
| Definition |
Definition |
| Einecs |
231-554-3 |
| Chemical name |
Sodium nitrate |
| Chemical formula |
NaNO3 |
| Molecular weight |
85,00 |
| Assay |
Content not less than 99 % on the anhydrous basis |
| Description |
White crystalline, slightly hygroscopic powder |
| Identification |
Identification |
| Test for nitrate |
Passes test |
| Test for sodium |
Passes test |
| pH |
5,5-8,3 (5 % solution) |
|
|
| Purity |
Purity |
| Loss on drying |
Not more than 2 % (105 °C, 4 hours) |
| Nitrites |
Not more than 30 mg/kg expressed as NaNO2 |
| Arsenic |
Not more than 0,1 mg/kg |
| Lead |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,1 mg/kg |
|
|
(ii) LIQUID SODIUM NITRATE
|
|
| Synonyms |
|
| Definition |
Liquid sodium nitrate is an aqueous solution of sodium nitrate as the direct result of the chemical reaction between sodium hydroxide and nitric acid in stoechiometric amounts, without subsequent crystallisation. Standardised forms prepared from liquid sodium nitrate meeting these specifications may contain nitric acid in excessive amounts, if clearly stated or labelled. |
| Einecs |
231-554-3 |
| Chemical name |
Sodium nitrate |
| Chemical formula |
NaNO3 |
| Molecular weight |
85,00 |
| Assay |
Content between 33,5 % and 40,0 % of NaNO3 |
| Description |
Clear colourless liquid |
| Identification |
Identification |
| Test for nitrate |
Passes test |
| Test for sodium |
Passes test |
| pH |
1,5-3,5 |
|
|
| Purity |
Purity |
| Free nitric acid |
Not more than 0,01 % |
| Nitrites |
Not more than 10 mg/kg expressed as NaNO2 |
| Arsenic |
Not more than 0,1 mg/kg |
| Lead |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,1 mg/kg |
|
|
This specification refers to a 35 % aqueous solution.
E 252 POTASSIUM NITRATE
|
|
| Synonyms |
Chile saltpetre; Cubic or soda nitre |
| Definition |
Definition |
| Einecs |
231-818-8 |
| Chemical name |
Potassium nitrate |
| Chemical formula |
KNO3 |
| Molecular weight |
101,11 |
| Assay |
Content not less than 99 % on the anhydrous basis |
| Description |
White crystalline powder or transparent prisms having a cooling, saline, pungent taste |
| Identification |
Identification |
| Test for nitrate |
Passes test |
| Test for potassium |
Passes test |
| pH |
4,5-8,5 (5 % solution) |
|
|
| Purity |
Purity |
| Loss on drying |
Not more than 1 % (105 °C, 4 hours) |
| Nitrites |
Not more than 20 mg/kg expressed as KNO2 |
| Arsenic |
Not more than 0,1 mg/kg |
| Lead |
Not more than 0,1 mg/kg |
| Mercury |
Not more than 0,1 mg/kg |
|
|
E 260 ACETIC ACID
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
200-580-7 |
| Chemical name |
Acetic acid; Ethanoic acid |
| Chemical formula |
C2H4O2 |
| Molecular weight |
60,05 |
| Assay |
Content not less than 99,8 % |
| Description |
Clear, colourless liquid having a pungent, characteristic odour |
| Identification |
Identification |
| Boiling point |
118 °C at 760 mm pressure (of mercury) |
| Specific gravity |
About 1,049 |
| Test for acetate |
A one in three solution gives positive tests for acetate |
| Solidification point |
Not lower than 14,5 °C |
| Purity |
Purity |
| Non-volatile residue |
Not more than 100 mg/kg |
| Formic acid, formates and other oxidisable substances |
Not more than 1 000 mg/kg expressed as formic acid |
| Readily oxidisable substances |
Dilute 2 ml of the sample in a glass-stoppered container with 10 ml of water and add 0,1 ml of 0,1 N potassium permanganate. The pink colour does not change to brown within 30 minutes |
| Arsenic |
Not more than 1 mg/kg |
| Lead |
Not more than 0,5 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 261 (i) POTASSIUM ACETATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
204-822-2 |
| Chemical name |
Potassium acetate |
| Chemical formula |
C2H3O2K |
| Molecular weight |
98,14 |
| Assay |
Content not less than 99 % on the anhydrous basis |
| Description |
Colourless, deliquescent crystals or a white crystalline powder, odourless or with a faint acetic odour |
| Identification |
Identification |
| pH |
7,5-9,0 (5 % aqueous solution) |
| Test for acetate |
Passes test |
| Test for potassium |
Passes test |
| Purity |
Purity |
| Loss on drying |
Not more than 8 % (150 °C, 2 hours) |
| Formic acid, formates and other oxidisable substances |
Not more than 1 000 mg/kg expressed as formic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 261 (ii) POTASSIUM DIACETATE
|
|
| Synonyms |
|
| Definition |
Potassium diacetate is a molecular compound of potassium acetate and acetic acid |
| Einecs |
224-217-7 |
| Chemical name |
Potassium hydrogen diacetate |
| Chemical formula |
C4H7KO4 |
| Molecular weight |
158,2 |
| Assay |
Content 36 to 38 % of free acetic acid and 61 to 64 % of potassium acetate |
| Description |
White crystals |
| Identification |
Identification |
| pH |
4,5-5 (10 % aqueous solution) |
| Test for acetate |
Passes test |
| Test for potassium |
Passes test |
| Purity |
Purity |
| Water content |
Not more than 1 % (Karl Fischer method) |
| Formic acid, formates and other oxidisable substances |
Not more than 1 000 mg/kg expressed as formic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 262 (i) SODIUM ACETATE
|
|
|
|
| Synonyms |
|
|
|
| Definition |
Definition |
Definition |
|
| Einecs |
204-823-8 |
204-823-8 |
|
| Chemical name |
Sodium acetate |
Sodium acetate |
|
| Chemical formula |
C2H3NaO2·nH2O (n = 0 or 3) |
C2H3NaO2·nH2O (n = 0 or 3) |
|
| Molecular weight |
Anhydrous: |
82,03 |
|
| Molecular weight |
Trihydrate: |
136,08 |
|
| Assay |
Content (for both of anhydrous and trihydrate form) not less than 98,5 % on the anhydrous basis |
Content (for both of anhydrous and trihydrate form) not less than 98,5 % on the anhydrous basis |
|
| Description |
Anhydrous: |
White, odourless, granular, hygroscopic powder |
|
| Description |
Trihydrate: |
Colourless, transparent crystals or a granular crystalline powder, odourless or with a faint, acetic odour. Effloresces in warm, dry air |
|
| Description |
Identification |
Identification |
Identification |
| Description |
pH |
8,0-9,5 (1 % aqueous solution) |
8,0-9,5 (1 % aqueous solution) |
| Test for acetate |
Passes test |
Passes test |
|
| Test for sodium |
Passes test |
Passes test |
|
| Purity |
Purity |
Purity |
|
| Loss on drying |
Anhydrous: |
Not more than 2 % (120 °C, 4 hours) |
|
| Loss on drying |
Trihydrate: |
Between 36 and 42 % (120 °C, 4 hours) |
|
| Formic acid, formates and other oxidisable substances |
Not more than 1 000 mg/kg expressed as formic acid |
Not more than 1 000 mg/kg expressed as formic acid |
|
| Arsenic |
Not more than 3 mg/kg |
Not more than 3 mg/kg |
|
| Lead |
Not more than 2 mg/kg |
Not more than 2 mg/kg |
|
| Mercury |
Not more than 1 mg/kg |
Not more than 1 mg/kg |
|
E 262 (ii) SODIUM DIACETATE
|
|
| Synonyms |
|
| Definition |
Sodium diacetate is a molecular compound of sodium acetate and acetic acid |
| Einecs |
204-814-9 |
| Chemical name |
Sodium hydrogen diacetate |
| Chemical formula |
C4H7NaO4·nH2O (n = 0 or 3) |
| Molecular weight |
142,09 (anhydrous) |
|
|
| Assay |
Content 39 to 43 % of free acetic acid and 57 to 60 % of sodium acetate |
|
|
| Description |
White, hygroscopic crystalline solid with an acetic odour |
| Identification |
Identification |
| pH |
4,5-5,0 (10 % aqueous solution) |
| Test for acetate |
Passes test |
| Test for sodium |
Passes test |
| Purity |
Purity |
| Water content |
Not more than 2 % (Karl Fischer method) |
| Formic acid, formates and other oxidisable substances |
Not more than 1 000 mg/kg expressed as formic acid |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 263 CALCIUM ACETATE
|
|
|
| Synonyms |
|
|
| Definition |
Definition |
Definition |
| Einecs |
200-540-9 |
200-540-9 |
| Chemical name |
Calcium acetate |
Calcium acetate |
| Chemical formula |
Anhydrous: |
C4H6O4Ca |
| Chemical formula |
Monohydrate: |
C4H6O4Ca·H2O |
| Molecular weight |
Anhydrous: |
158,17 |
| Molecular weight |
Monohydrate: |
176,18 |
| Assay |
Content not less than 98 % on the anhydrous basis |
Content not less than 98 % on the anhydrous basis |
| Description |
Anhydrous calcium acetate is a white, hygroscopic, bulky, crystalline solid with a slightly bitter taste. A slight odour of acetic acid may be present. The monohydrate may be needles, granules or powder |
Anhydrous calcium acetate is a white, hygroscopic, bulky, crystalline solid with a slightly bitter taste. A slight odour of acetic acid may be present. The monohydrate may be needles, granules or powder |
| Identification |
Identification |
Identification |
| pH |
6,0-9,0 (10 % aqueous solution) |
6,0-9,0 (10 % aqueous solution) |
| Test for acetate |
Passes test |
Passes test |
| Test for calcium |
Passes test |
Passes test |
| Purity |
Purity |
Purity |
| Loss on drying |
Not more than 11 % (155 °C to constant weight, for the monohydrate) |
Not more than 11 % (155 °C to constant weight, for the monohydrate) |
| Water insoluble matter |
Not more than 0,3 % |
Not more than 0,3 % |
| Formic acid, formates and other oxidisable substances |
Not more than 1 000 mg/kg expressed as formic acid |
Not more than 1 000 mg/kg expressed as formic acid |
| Arsenic |
Not more than 3 mg/kg |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
Not more than 1 mg/kg |
E 267 BUFFERED VINEGAR
|
|
| Synonyms |
Buffered vinegar (liquid); buffered vinegar (powder) |
| Definition |
Buffered vinegar is a liquid or dried product prepared by adding buffering agents to vinegar. The buffering agents used are sodium/potassium hydroxides (E 524 to E 525) and sodium/potassium carbonates (E 500 to E 501). The vinegar is compliant with the European Standard EN 13188:2000 and is exclusively obtained from an agricultural source origin (except wood/cellulose) by double fermentation, alcoholic and acetous. The primary constituents of buffered vinegar are acetic acid and its salts. |
| Assay |
Liquid: 15–40 % (w/w) acetic acid equivalents |
| Assay |
Powder: 55–75 % (w/w) acetic acid equivalents |
| Assay |
2 to 20 % (w/w) free acetic acid |
| Description |
Liquid: colourless to brown viscous liquid |
| Description |
Powder: white to creamy-white crystalline powder |
| Identification |
Liquid: pH 4,75–7,5 |
| Identification |
Powder: pH 4,75–6,75 (10 % aqueous solution) |
| Purity |
Purity |
| Cations |
Liquid: Not more than 10 % sodium and 30 % potassium |
| Cations |
Powder: Not more than 30 % sodium and 40 % potassium |
| Water content |
Powder: Not more than 18 % (Karl Fischer Method) |
| Ethanol |
Not more than 0,5 % w/w |
| Arsenic |
Not more than 0,05 mg/kg |
| Lead |
Not more than 0,05 mg/kg |
| Cadmium |
Not more than 0,05 mg/kg |
| Mercury |
Not more than 0,05 mg/kg |
E 270 LACTIC ACID
|
|
| Synonyms |
|
| Definition |
Consists of a mixture of lactic acid (C3H6O3) and lactic acid lactate (C6H10O5). It is obtained by the lactic fermentation of sugars or is prepared synthetically. Lactic acid is hygroscopic and when concentrated by boiling, it condenses to form lactic acid lactate, which on dilution and heating hydrolyses to lactic acid. |
| Einecs |
200-018-0 |
| Chemical name |
Lactic acid; 2-Hydroxypropionic acid; 1-Hydroxyethane-1-carboxylic acid |
| Chemical formula |
C3H6O3 |
| Molecular weight |
90,08 |
| Assay |
Content not less than 76 % |
| Description |
Colourless or yellowish, nearly odourless, syrupy liquid to solid |
| Identification |
Identification |
| Test for lactate |
Passes test |
| Purity |
Purity |
| Sulphated ash |
Not more than 0,1 % |
| Chloride |
Not more than 0,2 % |
| Sulphate |
Not more than 0,25 % |
| Iron |
Not more than 10 mg/kg |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
Note: This specification refers to a 80 % aqueous solution; for weaker aqueous solutions, calculate values corresponding to their lactic acid content
E 280 PROPIONIC ACID
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
201-176-3 |
| Chemical name |
Propionic acid; Propanoic acid |
| Chemical formula |
C3H6O2 |
| Molecular weight |
74,08 |
| Assay |
Content not less than 99,5 % |
| Description |
Colourless or slightly yellowish, oily liquid with a slightly pungent odour |
| Identification |
Identification |
| Melting point |
– 22 °C |
| Distillation range |
138,5 °C to 142,5 °C |
| Purity |
Purity |
| Non-volatile residue |
Not more than 0,01 % when dried at 140 °C to constant weight |
| Aldehydes |
Not more than 0,1 % expressed as formaldehyde |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 2 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 281 SODIUM PROPIONATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
205-290-4 |
| Chemical name |
Sodium propionate; Sodium propanoate |
| Chemical formula |
C3H5O2Na |
| Molecular weight |
96,06 |
| Assay |
Content not less than 99 % after drying for two hours at 105 °C |
| Description |
White crystalline hygroscopic powder, or a fine white powder |
| Identification |
Identification |
| Test for propionate |
Passes test |
| Test for sodium |
Passes test |
| pH |
7,5-10,5 (10 % aqueous solution) |
| Purity |
Purity |
| Loss on drying |
Not more than 4 % (105 °C, 2 hours) |
| Water insoluble matter |
Not more than 0,1 % |
| Iron |
Not more than 50 mg/kg |
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 5 mg/kg |
| Mercury |
Not more than 1 mg/kg |
E 282 CALCIUM PROPIONATE
|
|
| Synonyms |
|
| Definition |
Definition |
| Einecs |
223-795-8 |
| Chemical name |
Calcium propionate |
| Chemical formula |
C6H10O4Ca |
| Molecular weight |
186,22 |
| Assay |
Content not less than 99 %, after drying for two hours at 105 °C |
| Description |
White crystalline powder |
| Identification |
Identification |
| Test for propionate |
Passes test |
| Test for calcium |
Passes test |
| pH |
6,0-9,0 (10 % aqueous solution) |
| Purity |
Purity |
| Loss on drying |
Not more than 4 % (105 °C, 2 hours) |
| Water insoluble matter |
Not more than 0,3 % |
| Iron |
Not more than 50 mg/kg |
|
|
| Fluoride |
Not more than 20 mg/kg |
|
|
| Arsenic |
Not more than 3 mg/kg |
| Lead |
Not more than 5 mg/kg |
| Mercury |
Not more than 1 mg/kg |
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