Iron Sulfate
Green Vitriol, Iron Vitriol, Ferric Sulfate
- CAS
- 7720-78-7
- EC
- 231-753-5
- Sectors
- Water & Wastewater Treatment, Agriculture, Nutraceuticals & Supplements
Iron Sulfate (CAS 7720-78-7) is a ferrous salt of sulfuric acid, also known as green vitriol, that appears as a hygroscopic crystalline solid and serves as an iron source in fertilizers, water purification and dietary supplements.
Typical Properties
| Molecular formula | Fe.H2O4S |
|---|---|
| Molecular weight | 151.91 g/mol |
| Form | white orthorhombic crystals |
| Color | white orthorhombic crystals, crystalline; hygroscopic |
| Odor | at 100.00?%. odorless |
| Melting point | decomposes at 671°C [JAN85] |
| Density | 2.99-3.08 g/cm³ |
| pH | 2.5 (20°C, 50g/L in H2O) |
| GHS signal word | Warning · Irritant / harmful |
| HS code | 28332910 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Iron Sulfate
Applications
Used in fertilizers, water purification, and dietary supplements for iron deficiency anemia. It also serves as a reducing agent in cement and pigment manufacturing.
Safety & Risks
Harmful if swallowed; corrosive to eyes and skin in concentrated form. Avoid moisture and incompatible materials.
Packaging
Supplied in 25–50 kg PE-lined bags. Store sealed, cool, and dry to prevent oxidation.