EDTMP·Na₅ Pentasodium Salt - Advanced scale inhibitor and cathodic corrosion inhibitor for industrial water treatment. Excellent thermal stability up to 200°C with neutral pH formulation.
Product Name: Ethylenediamine Tetra(methylene phosphonic acid) Pentasodium Salt (EDTMP·Na₅)
CAS Number: 7651-99-2
Molecular Formula: C₆H₁₅O₁₂N₂P₄Na₅
Synonyms: Sodium ethylenediamine tetramethylenephosphonate; EDTMP pentasodium salt

EDTMP·Na₅ is a neutral, nitrogen-containing organic phosphonate that serves as an advanced cathodic corrosion inhibitor with exceptional scale prevention capabilities. This versatile compound demonstrates remarkable thermal stability, maintaining effective performance at temperatures up to 200°C. Its unique molecular structure allows dissociation into eight ions in aqueous solutions, enabling superior chelation with multiple metal ions and formation of complex macromolecular networks that effectively disrupt scale crystallization processes. The solid formulation offers excellent handling characteristics with minimal hygroscopicity, making it particularly suitable for cold weather conditions and transportation.
Excellent Thermal Stability: Maintains performance at temperatures up to 200°C
Superior Scale Inhibition: Effective against calcium sulfate and barium sulfate scales
Cathodic Corrosion Protection: Provides reliable metal surface protection
Neutral pH Formula: Ready-to-use solution requiring no pH adjustment
Environmental Safety: Non-toxic and environmentally friendly
Multi-Ion Chelation: Capable of complexing with various metal ions
Enhanced Solubility: Excellent water miscibility for easy application
Cold Weather suitability: Solid form suitable for low-temperature conditions
| Parameter | Liquid Form | Solid Form |
|---|---|---|
| Appearance | Amber transparent liquid | White powder |
| Active Content (as EDTMP·Na₅), % | 30.0-32.5 | ≥ 81.4 |
| Active Content (as EDTMPA), % | 24.0-26.0 | ≥ 65.0 |
| Chloride (Cl⁻), % | ≤ 2.0 | ≤ 2.0 |
| Density (20°C), g/cm³ | ≥ 1.25 | -- |
| Iron (Fe), mg/L | ≤ 20 | ≤ 20 |
| pH (1% aqueous solution) | 6.0-8.0 | 6.0-8.0 |
Specifications may vary between production batches. Please refer to the Certificate of Analysis for precise values.
EDTMP·Na₅ is engineered for excellence across multiple industries:
Industrial Water Treatment: Circulating cooling water and boiler water systems
Metal Surface Treatment: Cyanide-free electroplating complexing agent
Textile Processing: Water softening and treatment in dyeing operations
Power Generation: Cooling water treatment in power plants
Oil & Gas: Scale and corrosion control in production systems
General Industrial: Various process water treatment applications
Chemical Processing: Water treatment in manufacturing processes
EDTMP·Na₅ is designed for easy integration into various water treatment systems. The neutral pH formulation allows for straightforward application without requiring additional pH adjustment. Optimal dosage should be determined based on specific water chemistry, system parameters, and scaling potential through performance testing and monitoring.
Liquid Form: 25 kg and 250 kg plastic drums
Solid Form: 20 kg polyethylene-lined plastic bags
Custom Packaging: Available upon request
Storage: Store in cool, dry, well-ventilated area
Shelf Life: 12 months from production date
Handling: Protect from moisture and extreme temperatures
EDTMP·Na₅ is a neutral substance. Standard personal protective equipment should be worn during handling, including safety glasses and gloves. Avoid contact with skin, eyes, and clothing. In case of contact, immediately flush with plenty of water. For comprehensive safety information, consult the Safety Data Sheet (SDS).
[ Safety Data Sheet (SDS)]
[ Technical Data Sheet (TDS)]
[ Certificate of Analysis (COA)]
Contact our technical team to request complete documentation package
Evaluate EDTMP·Na₅ performance in your specific application. Contact us to request a complimentary sample and technical consultation.
Our team of water treatment specialists provides:
Customized formulation recommendations
Application-specific dosage guidance
Compatibility testing services
Technical consultation and troubleshooting
Performance optimization services
Quality Assurance: All products undergo rigorous quality control testing to ensure consistent performance and reliability. Each batch is accompanied by a Certificate of Analysis guaranteeing specification compliance.
Regulatory Compliance: EDTMP·Na₅ meets international standards for water treatment chemicals and environmental regulations.
Disclaimer: The information provided is based on current knowledge and believed to be accurate. Users should conduct appropriate testing to determine suitability for specific applications. All products are supplied subject to our standard terms and conditions of sale.