Product Category: Water Treatment Chemicals / Mining Chemicals
Chemical Name: Iron(III) Chloride Solution
Alternative Names: Ferric Chloride / Ferric Chloride Solution
CAS Number: 7705-08-0
Chemical Formula: FeCl₃
Molecular Weight: 162.20 g/mol — anhydrous FeCl₃ basis
Concentration: 40–44%
Appearance: Dark brown liquid
Product Overview
Ferric Chloride 40–44% is a highly effective inorganic coagulant used extensively in drinking-water treatment, industrial wastewater treatment, mine-water treatment and sludge-conditioning applications.
Ferric ions destabilise suspended and colloidal contaminants, encouraging formation of larger flocs that can subsequently be removed by clarification, sedimentation or filtration.
Typical Technical Specification
| Property | Typical Reference |
| SKU | MCS-F3 |
| FeCl₃ Concentration | Approx. 40–44% |
| Appearance | Dark brown liquid |
| Density | Approx. 1.40–1.45 g/cm³ depending on concentration |
| Total Iron | Approx. 13.5–15% depending on grade |
| pH | <1 |
| Free Acid | Grade dependent |
| Solubility | Miscible with water |
| CAS Number | 7705-08-0 |
A current South African NSF listing specifically recognises Ferric Chloride 40–44% as a coagulation and flocculation chemical for drinking-water treatment. Commercial 40% grades typically have specific gravity around 1.40–1.45.
Applications
- Municipal drinking-water treatment
- Industrial wastewater treatment
- Mine-water treatment
- Effluent clarification
- Phosphorus removal
- Sludge conditioning
- Sewage treatment
- Industrial process-water treatment
- Metal etching and surface treatment
Key Benefits
- Strong coagulation performance
- Effective turbidity reduction
- Supports phosphorus removal
- Effective across a broad water-treatment pH range
- Suitable for automated chemical-dosing systems
Packaging
Typically supplied in compatible drums, IBCs, flexitanks or bulk tankers.
Storage
Ferric Chloride is acidic and corrosive.
Store in chemical-resistant tanks and use compatible pumps, valves and piping. Avoid contact with incompatible metals and alkaline chemicals.
