Chemical name: 2-Phosphonobutane-1,2,4-tricarboxylic acid sodium salt
CAS.NO: 40372-66-5
Molecular weight: 294.13
Appearance: White crystals
Parameter | Specification | HEDP Sodium Salt | ATMP Sodium Salt |
---|---|---|---|
CAS Number | 40372-66-5 | 29329-71-3 | 20592-85-2 |
Molecular Formula | C7H9Na4O10P | C2H4Na2O7P2 | C3H7NNa3O9P3 |
Phosphorus Content | 8.2-8.8% | 18.5-20.5% | 22-24% |
Scale Inhibition Efficiency | ≥95% (CaCO3) | ≥90% |
Demonstrates exceptional calcium carbonate inhibition (up to 97% at 10ppm concentration) through chelation and crystal distortion mechanisms in cooling towers at 60-80°C operating temperatures.
Enhances surfactant performance by 15-20% through metal ion sequestration in hard water conditions (150-300ppm Ca2+), maintaining pH stability between 9.5-10.5.
Application | Dosage Range | Compatibility |
---|---|---|
Cooling Water | 5-20ppm | Stable with HEDP/PBTC blends |
Textile Processing | 0.5-1.2% w/w | Avoid strong oxidizers |
Reduced calcium sulfate scaling by 89% in 1000MW coal-fired plant recirculating water (cycles of concentration increased from 3.5 to 5.8), achieving ROI within 11 months.
Annual consumption: 85 metric tons in reverse osmosis membrane protection applications, maintaining LSI > 2.3 without scaling for 24-month operational cycles.
Integrated 3.5% concentration in heavy-duty cleaners, improving wash cycle efficiency by 18% while meeting EU Regulation (EC) No 648/2004 phosphate limits.
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