Diethylene Triamine Penta Methylene Phosphonate Heptasodium Salt, DTPMP(7Na), PHOSPHONIL D73, or Phosphonate Salt, is a clear yellow liquid belonging to the phosphonate family. It serves as a scale and corrosion inhibitor in water and wastewater treatment, oil, gas, and petrochemical industries. It prevents stain re-deposition and hard water ion precipitation on fabrics and surfaces, while acting as an antiscalant and peroxide stabilizer. It remains stable across a wide pH range and is biodegradable.
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Scale and Corrosion Inhibition: DTPMP(7Na) is a highly effective scale and corrosion inhibitor. By controlling the formation of metal ions, this compound prevents scale buildup on surfaces such as pipes, boilers, and heat exchange systems. Additionally, PHOSPHONIL D73 forms a protective layer on metal surfaces, reducing the risk of corrosion caused by corrosive agents.
High Thermal Stability: This phosphonate salt (Diethylene Triamine Penta Methylene Phosphonate Heptasodium Salt) exhibits excellent thermal stability, which allows it to perform exceptionally well at high temperatures. This characteristic makes it suitable for equipment operating under high-temperature conditions, such as industrial boilers and cooling towers.
Stability Across a Wide pH Range: PHOSPHONIL D73 (phosphonate salt) remains stable across a wide pH range, from acidic to alkaline environments. It retains its chelating and inhibiting properties, delivering reliable performance across diverse pH conditions.
Synergistic Effect: Diethylene Triamine Penta Methylene Phosphonate Heptasodium Salt (PHOSPHONIL D73) demonstrates boosting effects when used in combination with other chelating agents and inhibitors. PHOSPHONIL D73 enhances the performance of these substances, providing superior scale and corrosion inhibition compared to using them individually.
Low Dosage Requirement: Small amounts of DTPMP(7Na) (phosphonate salt) can prevent the formation of large volumes of various scales, thereby reducing the consumption coefficient of antiscalant compounds.
Environmental Compatibility: PHOSPHONIL D73 is considered an environmentally friendly substance, as it is biodegradable and does not cause environmental pollution. Since phosphonate salts stabilize disinfecting agents, this makes PHOSPHONIL D73 an excellent choice for use in water treatment processes.
Regulatory Compliance: DTPMP(7Na) complies with international standards, ensuring its safe and approved use across various industries.
| Appearance at 25°C | Clear brown (yellowish) liquid |
| Active Ingredient Content (%) (MW=727 g/mol) | 30 – 33 |
| Chloride Content (%) | Maximum 5 |
| Density at 25°C (g/ml) | 1.25 – 1.35 |
| pH (1% in water) | 6 – 8 |
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