Ferrous sulfate
Food grade ferrous sulfate
Chemical name: Ferrous sulfate
CAS:7720-78-7
Molecular formula: FeSO4·7H2O (heptahydrate), FeSO4·nH2O (anhydrous)
Molecular weight: 278.01 (heptahydrate), 169.92/223.92 (anhydrous)
Properties: Blue-green crystals or granules, odorless, slightly salty, astringent. It is prone to decomposition in dry air and gradually oxidizes in moist air, forming yellowish-brown alkaline ferric sulfate. The anhydrous form is a white powder that turns blue-green when reacting with water. Insoluble in ethanol. It can coagulate proteins and has astringent and preservative effects.
Our Specification
Table: Technical Indicators of Ferrous Sulfate (GB29211-2012)
| Indicator Name | Specification |
|---|---|
| Appearance | Gray or bluish-green crystalline granules or powder |
| Ferrous Sulfate, % | Dried: 86-89 Heptahydrate: 99.5-104.5 |
| Arsenic (As), ppm | ≤ 3 |
| Lead (Pb), ppm | ≤ 2 |
| Mercury (Hg), ppm | ≤ 1 |
| Acid Insoluble Matter, % (Dried) | ≤ 0.05 |
Applications: In the food industry, it is used as an iron fortifier, color developer, and processing aid, etc.
Packaging: Inner lined with polyethylene plastic bags, outer wrapped in plastic woven bags, each bag with a net weight of 25 kilograms.
Storage and transportation: The packaging should be kept intact. Store in a dry, well-ventilated and clean warehouse, protected from water and moisture. It should be stored separately from toxic substances. The shelf life of this product is two years.