Ferrous Sulfate
- Chemical Formula: FeSO₄ (can be anhydrous, monohydrate, or heptahydrate)
- Anhydrous: White to pale yellow powder
- Heptahydrate (most common): Blue-green crystals
- Odor: Odorless
- Molecular Weight: 151.91 g/mol (anhydrous)
- Anhydrous: 3.65 g/cm³
- Heptahydrate: 1.898 g/cm³
- Solubility: Soluble in water
- Stability: Oxidizes in moist air, turning brown