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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 | Isoascorbic acid; D-Araboascorbic acid |
Definition | |
---|---|
Einecs | 201-928-0 |
Chemical name | D-Erythro-hex-2-enoic acid γ-lactone; Isoascorbic acid; D-Isoascorbic acid |
Chemical formula | C6H8O6 |
Molecular weight | 176,13 |
Assay | Content not less than 98 % on the anhydrous basis |
Description | White to slightly yellow crystalline solid which darkens gradually on exposure to light |
Identification | |
Melting range | About 164 °C to 172 °C with decomposition |
Test for ascorbic acid/colour reaction | Passes test |
Specific rotation | [α]D 25 10 % (w/v) aqueous solution between – 16,5° to – 18,0° |
Purity | |
Loss on drying | Not more than 0,4 % after drying under (reduced pressure on silica gel, 3 hours) |
Sulphated ash | Not more than 0,3 % |
Oxalate | To a solution of 1 g in 10 ml of water add 2 drops of glacial acetic acid and 5 ml of 10 % calcium acetate solution. The solution should remain clear |
Lead | Not more than 2 mg/kg |
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