
Ferrous sulfate monohydrate (FeSO₄·H₂O, mw 169.92) is an inorganic iron salt compound. At room temperature, it appears as a grayish-white to beige powder or crystals. It is reducing and weakly acidic, highly soluble in water, practically insoluble in ethanol, and significantly less hygroscopic than ferrous sulfate heptahydrate. It is widely used in water treatment, agriculture, animal feed, pharmaceuticals, and the chemical industry, serving as an important iron supplement, flocculant, soil conditioner, and chemical raw material.
| Item | Specification |
| Melting Point | 64℃ |
| Boiling Point | 330°C at 760 mmHg |
| Density | 3.000 g/cm³ |
| Flash Point | N/A |
| Vapor pressure | N/A |
| PSA | 97.87 |
| Solubility | Easily soluble in water and glycerol; practically insoluble in ethanol, ether, and acetone. |
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