DTPA Chelating Agent for Water Treatment
CAS Number: 67-43-6
Diethylenetriaminepentaacetic acid (DTPA) is a powerful pentadentate chelating agent that forms stronger and more stable metal complexes than EDTA, particularly with iron, manganese, and heavy metals. It is widely used in industrial water treatment, pulp bleaching, and hydrogen peroxide stabilization. DTPA is preferred over EDTA in systems with elevated transition metal ion concentrations.
Technical Specifications
| purity | ≥98% (free acid) |
| moisture | ≤1.0% |
| appearance | White crystalline powder or clear solution (penta-sodium salt) |
| pH (1% Na₅DTPA) | 11.0–12.0 |
Applications
- Iron and manganese sequestration in water systems
- Pulp and paper bleaching process stabilization
- Hydrogen peroxide stabilization
- Heavy metal control in industrial effluents
- Boiler and cooling water metal ion control
Key Features
- Superior chelation of iron and manganese versus EDTA
- Highly stable complexes prevent metal re-precipitation
- Effective stabilizer for oxidizing bleaching agents
- Available as free acid and penta-sodium salt
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CAS Number
67-43-6
Category
Water Treatment ChemicalsAvailability
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