STPP High Purity Sodium Tripolyphosphate Industrial Grade Water Softener
| Attribute | Value |
|---|---|
| CAS | 7758-29-4 |
| EINECS | 231-838-7 |
| Appearance | White powder |
| Crystalline hydrate | No Water crystals |
| Life span | Two years |
| Stats | Chemical materials |
| PH | 9~10 |
25kg Per Bag CAS 7758-29-4 Sodium Tripolyphosphate for Water Treatment
Molecular formula: Na5P3O10
Molecular weight: 367.86
| Parameter | Standard Value |
|---|---|
| Main content: sodium tripolyphosphate ≥ | 96.0% |
| Phosphorus pentoxide P2O5 ≤ | 57.0% |
| Water insoluble ≤ | 0.10% |
| Fluoride (as F) ≤ | 0.007% |
| pH Value (1%) | 9.2-10.0 |
| Whiteness ≥ | 90 |
| Parameter | Standard Value |
|---|---|
| Main content: sodium tripolyphosphate ≥ | 95.0% |
| Phosphorus pentoxide P2O5 ≤ | 57.0% |
| Water insoluble ≤ | 0.05% |
| Fluoride (as F) ≤ | 0.003% |
| Heavy metal (as Pb) ≤ | 0.001% |
| Arsenic (as As) ≤ | 0.0003% |
| Sulphate (as SO4) ≤ | 0.4% |
| Chlorine (as Cl) ≤ | 0.025% |
| pH Value (1%) | 9.5-10.0 |
| Whiteness ≥ | 85 |
- White granular or powder with density of 0.35-0.90 g/cm3 and melting point of 622°C
- Easily soluble in water with alkaline aqueous solution (pH 9.7 for 1% solution)
- Gradually hydrolyzes into phosphite in water with excellent metal complexation ability
- Forms soluble complexes with calcium, magnesium, iron and other metal ions
- Effective water softener with inorganic surfactant properties
- Synthetic detergent additive and soap agent
- Prevents bar soap grease precipitation and frosting
- Industrial water softener for tanning, dyeing, and paint industries
- Dispersant for kaolin, magnesium oxide, calcium carbonate suspensions
- Drilling mud dispersant and paper industry anti-oil agent
- Chelating effect: Combines with Ca²⁺ and Mg²⁺ ions to prevent scale formation
- Dispersion effect: Prevents scale deposition in pipelines and equipment
- Corrosion inhibition: Forms protective film on metal surfaces
Boiler water treatment: Prevents scaling, improves thermal efficiency (use below 80°C)
Industrial cooling water: Reduces calcium/magnesium deposition in cooling systems
Textile industry: Softens water, prevents dye sedimentation
Detergents: Enhances cleaning performance in hard water
- Select industrial-grade STPP with ≥94% purity
- Conduct small-scale dosage tests before full implementation
- Verify supplier credentials and request MSDS documentation
We accept T/T and L/C at sight payments.
Yes, we specialize in timely deliveries while maintaining top product quality.
Yes, we provide free samples with the customer covering express shipping costs.
We offer competitive pricing that can be negotiated based on order volume and conditions.
Yes, we welcome visits to our Weifang facility and provide airport transportation.
Our professional after-sales team promptly resolves any quality issues.
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