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Commission Regulation (EU) No 231/2012 of 9 March 2012 laying down specifications for food additives listed in Annexes II and III to Regulation (EC) No 1333/2008 of the European Parliament and of the Council (Text with EEA relevance)
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Synonyms | Iron Oxide Yellow: CI Pigment Yellow 42 and 43 | |
Iron Oxide Red: CI Pigment Red 101 and 102 | ||
Iron Oxide Black: CI Pigment Black 11 | ||
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. | |
Colour Index No | Iron Oxide Yellow: | 77492 |
Iron Oxide Red: | 77491 | |
Iron Oxide Black: | 77499 | |
Einecs | Iron Oxide Yellow: | 257-098-5 |
Iron Oxide Red: | 215-168-2 | |
Iron Oxide Black: | 235-442-5 | |
Chemical name | Iron Oxide Yellow: hydrated ferric oxide, hydrated iron (III) oxide | |
Iron Oxide Red: anhydrous ferric oxide, anhydrous iron (III) oxide | ||
Iron Oxide Black: ferroso ferric oxide, iron (II, III) oxide | ||
Chemical formula | Iron Oxide Yellow: | FeO(OH) · H2O |
Iron Oxide Red: | Fe2O3 | |
Iron Oxide Black: | FeO.Fe2O3 | |
Molecular weight | 88,85: | FeO(OH) |
159,70: | Fe2O3 | |
231,55: | FeO.Fe2O3 | |
Assay | 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 | |
Identification | ||
---|---|---|
Solubility | Insoluble in water and in organic solvents Soluble in concentrated mineral acids | |
Purity | ||
Water soluble matter | Not more than 1,0 % | By total dissolution |
Arsenic | Not more than 3 mg/kg | |
Cadmium | Not more than 1 mg/kg | |
Chromium | Not more than 100 mg/kg | |
Copper | Not more than 50 mg/kg | |
Lead | Not more than 10 mg/kg | |
Mercury | Not more than 1 mg/kg | |
Nickel | Not more than 200 mg/kg | |
Zinc | Not more than 100 mg/kg |
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