Ferric Sulfate (Iron(III) Sulfate)
CAS Number: 10028-22-5
Ferric sulfate is an acidic inorganic coagulant containing ≥18% total iron, effective for turbidity removal, phosphate precipitation, and color reduction in municipal and industrial wastewater. Its low pH in solution promotes rapid hydrolysis and dense floc formation across a wide range of source water qualities.
Technical Specifications
| total fe | ≥ 18% |
| packaging | 25 kg woven bags or IBC totes |
| appearance | Reddish-brown powder |
| fe2o3 content | ≥ 20% |
| pH 1% solution | 2.5–3.5 |
| water insoluble | ≤ 1% |
Applications
- Municipal drinking water turbidity removal
- Phosphate precipitation in municipal wastewater
- Industrial effluent coagulation (metal finishing, textile)
- Color and COD reduction in paper mill wastewater
- Sludge conditioning prior to dewatering
- Mine drainage neutralization and iron removal
Key Features
- High iron content provides strong coagulation efficiency at low dosage
- Effective phosphate removal to <0.1 mg/L at optimized dose
- Works across wide pH range (4.0–11.0) for flexible operation
- Produces denser, faster-settling floc compared to alum
- Cost-effective alternative to polymer coagulants for high-turbidity water
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