Description
1. Chemical name: ferrous sulfate
2. Molecular formula: Heptahydrate: FeSO47H2O; dry product: FeSO4 nH2O
3. Molecular weight: Heptahydrate: 278.01;
4. CAS: Heptahydrate: 7782-63-0; Dry product: 7720-78-7
5. Properties: Heptahydrate: blue-green crystals or granules. Odorless, slightly or tasteless, astringent, will be weathered in dry air, and easily oxidized into brown-yellow basic ferric sulfate in humid air. Soluble in water, insoluble in ethanol.
Dry product: off-white to beige powder. Has an astringent taste. It is mainly composed of FeSO-Ho, and contains a small amount of FeSO4-4HO. It dissolves slowly in cold water (26.6g/100mL, 20°C), and dissolves rapidly when heated. Insoluble in ethanol. Almost insoluble in 50% sulfuric acid.
6. Uses: nutritional supplements (iron fortifiers), fruit and vegetable coloring agents.
7. Packaging: Inner lined with polyethylene plastic bag, outer layer in composite plastic woven bag, net weight of each bag is 25kg.
8. Storage and remote transportation: This product should be stored in a dry, ventilated and clean warehouse. When loading and transporting, it should be handled lightly to prevent packaging glass powder, prevent moisture, heat, and prevent rain and moisture during transportation. It should be isolated from toxic substances. .
| Specification | GB29211-2012 | FCC VII |
| Content, w% | Heptahydrate (FeSO4 ·7H2O) | 99.5-104.5 | 99.5-104.5 |
| Dried(FeSO4 | 860- 890 | 86.0-89.0 |
| Lead(Pb),mg/kg ≤ | 2 | 2 |
| Arsenic(As),mg/kg ≤ | 3 | --- |
| Mercury (Hg),mg/kg ≤ | 1 | 1 |
| Acid Insoluble(Dried),w% | 0.05 | 0.05 |
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