Polyferric Sulfate (PFS)
CAS Number: 10028-22-5
Polyferric sulfate (PFS) is a high-performance iron-based coagulant offering excellent turbidity, color, and phosphorus removal in drinking water and industrial wastewater applications. Its high charge density and hydrolysis products create stable, rapidly settling flocs even at low temperatures. Supplied as reddish-brown liquid or solid.
Technical Specifications
| basicity | 9–14% |
| appearance | Reddish-brown liquid or yellow powder |
| density liquid | 1.45–1.55 g/cm³ |
| Fe content solid | ≥18.5% (as Fe) |
| pH 1pct solution | 2.0–3.0 |
| Fe content liquid | ≥11% (as Fe) |
Applications
- Drinking water and surface water clarification
- Municipal wastewater phosphorus precipitation
- Industrial wastewater color and COD reduction
- Sludge conditioning prior to dewatering
- Paper and pulp mill effluent treatment
Key Features
- Superior phosphorus removal efficiency (>95%) at low dose
- Effective at low temperature and low turbidity water
- Non-toxic and safe for drinking water applications
- Produces compact, dense flocs for fast sedimentation
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