1、Chemical Name: Ferrous Sulfate
2、Molecular Formula : FeSO4·7H2O, FeSO4·nH2O
3、Molecular Weight: Heptahydrate :278.03
4、CAS: Heptahydrate: 7782-63-0; Dried: 7720-78-7
5、Character: Heptahydrate: It’s blue-green crystals or granules, odorless with astringency. In dry air, it’s efflorescent. In moist air, it oxidizes readily to form a brown-yellow, basic ferric sulfate. It’s soluble in water, insoluble in ethanol.
6、Usage: It is used as nutritional supplement(iron fortifier) and fruit and vegetable colorant.
7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
| 质量指标 | Specification | GB29211-2012 | FCC VII | ||
| 含量, w% | 七水合物(FeSO4·7H2O) | Content, w% | Heptahydrate (FeSO4·7H2O) | 99.5-104.5 | 99.5-104.5 |
| 干燥品(FeSO4) | Dried (FeSO4) | 86.0-89.0 | 86.0-89.0 | ||
| 铅 (Pb), mg/Kg ≤ | Lead(Pb),mg/Kg ≤ | 2 | 2 | ||
| 砷 (As), mg/Kg ≤ | Arsenic (As),mg/Kg ≤ | 3 | ———— | ||
| 汞 (Hg), mg/Kg ≤ | Mercury (Hg),mg/Kg ≤ | 1 | 1 | ||
| 酸不溶物(干燥品), w%≤ | Acid Insoluble (Dried), w% ≤ | 0.05 | 0.05 | ||
