Industrial Grade Highly Purified Sodium Tripolyphosphate Powder For Water Treatment
| Attribute | Value |
|---|---|
| CAS | 7758-29-4 |
| EINECS | 231-838-7 |
| Appearance | White powder |
| Crystalline Hydrate | No crystal water |
| PH | 9~10 |
| Whiteness | ≥90 |
| Chemical formula | Na5P3O10 |
Industrial Grade Highly Purified Sodium Tripolyphosphate for Water Treatment
Sodium tripolyphosphate/ STPP
Industrial grade 96% CAS 7758-29-4
grade 85% CAS 7758-29-4
Molecular formula Na5P3O10
Molecular weight 367.86
- White granular or powder, showing a density of 0.35-0.90G/CM3, melting point 622 degrees Celsius
- Easily soluble in water, the aqueous solution is alkaline, and the PH of 1% aqueous solution is 9.7
- Gradually hydrolyzed into phosphite in water, and has good ionic ability of metal complexation
- Can be complexed with calcium/magnesium/iron and other metal ions to produce soluble complexes
- Softens hard water and functions as an inorganic surfactant with properties similar to organic surfactants
Mainly used for synthetic detergent as an additive/soap agent and to prevent bar soap grease precipitation and frosting. It has a strong emulsifying effect on lubricating oil and fat, and can be used to:
- Adjust the PH value of buffer soap liquid
- Industrial water softener
- Tanning and pre-tanning agent
- Dyeing agent for paint, kaolin, magnesium oxide, calcium carbonate and other industries
- Prepare suspension as a dispersant
- Drilling mud dispersant
- Paper industry anti-oil agent
Molecular formula: Na5P3O10
Molecular weight: 367.86
Industrial grade CAS 7758-29-4
| Items for detecting and analyzing | 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 |
| Items for detecting and analyzing | Standard value |
|---|---|
| Main content: sodium tripolyphosphate ≥ | 95.0% |
| Phosphorus pentoxide P2O5≤ | 57.0% |
| Water insoluble≤ | 0.05% |
| Fluoride (as F) ≤ | 0.003% |
| Heavy martial (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 |
References: Riel Chemical Lab1&2, National public service platform for standards information.
- Washing aid: Sodium tripolyphosphate is an important component in traditional washing powders and detergents, which can soften water quality and enhance decontamination ability.
- Dispersant: Prevents dirt redeposition, keeps clothes white.
- Buffer: Maintains the pH value of the detergent and improves the cleaning effect.
- Water softener: Sodium tripolyphosphate can be combined with calcium and magnesium ions in water to prevent scale formation, and is used for industrial water treatment such as boiler water and cooling water.
- Corrosion inhibitors: Protects metal pipes and equipment from corrosion.
- Dye dispersant: In the dyeing process, helps the dye evenly dispersed, improving the dyeing effect.
- Water softener: Used for textile dyeing water treatment to prevent calcium and magnesium ions from affecting dyeing quality.
- Dispersant: In the papermaking process, sodium tripolyphosphate is used to disperse fibers and fillers to improve paper uniformity.
- Retention agent: Improves the retention rate of fillers and fine fibers, improving paper performance.
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