Synonyms | |
Definition |
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Einecs | 206-076-3 |
Chemical name | Ferrous di-D-gluconate dihydrate; Iron(II) di-gluconate dihydrate |
Chemical formula | C12H22FeO14·2H2O |
Molecular weight | 482,17 |
Assay | Content not less than 95 % on the dried basis |
Description | Pale greenish-yellow to yellowish-grey powder or granules, which may have a faint odour of burnt sugar |
Identification |
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Solubility | Soluble with slight heating in water. Practically insoluble in ethanol |
Test for ferrous ion | Passes test |
Formation of phenylhy-drazine derivative of gluconic acid | Positive |
pH | Between 4 and 5,5 (10 % solution) |
Purity |
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Loss on drying | Not more than 10 % (105 °C, 16 hours) |
Oxalic acid | Not detectable |
Iron (Fe III) | Not more than 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 |
Reducing substances | Not more than 0,5 % expressed as glucose |