96% CAS 7758-29-4 Sodium Tri Poly Phosphate For Industrial Manufacturing
Product Specifications
| 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 |
Technical Details
Molecular formula: Na5P3O10
Molecular weight: 367.86
Industrial Grade Specifications (GB/T 9983-2004 Standard)
| Test Item | 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 |
Grade Specifications (QB 1034-1991 Standard)
| Test Item | 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 |
References: Riel Chemical Lab1&2, National public service platform for standards information.
Performance Characteristics
- White granular or powder, showing a density of 0.35-0.90G/CM3, melting point 622°C
- Easily soluble in water, the aqueous solution is alkaline (PH of 1% aqueous solution is 9.7)
- Gradually hydrolyzed into phosphite in water
- Excellent metal complexation ability - can complex with calcium, magnesium, iron and other metal ions to produce soluble complexes
- Softens hard water
- Functions as an inorganic surfactant with some properties of organic surfactants
Industrial Applications
1. Detergent Industry (Core Uses)
- When compounded with surfactants (such as LAS), enhances decontamination power and prevents redeposition of dirt
- Softens hard water by chelating Ca²⁺ and Mg²⁺, enhancing washing effect
- Alternative technologies for phosphorus-free detergents exist due to environmental restrictions (eutrophication), but still widely used in industrial cleaning agents
2. Processing (-grade STPP)
- Moisture retention agent for meat and sea (ham, fish balls) to enhance water retention and improve taste
- Inhibits fat oxidation to extend shelf life
- Quality improver - enhances elasticity in noodles and canned , prevents starch from aging
3. Industrial Water Treatment
- Water softener and scale inhibitor for boiler water and circulating cooling water systems
- Prevents Ca/Mg scaling and chelates metal ions (Fe³⁺, Cu²⁺) to reduce pipeline corrosion
- Dispersant to prevent particle aggregation in papermaking and ceramic slurries
4. Other Industrial Applications
- Petroleum industry: Drilling mud additive for viscosity and stability control
- Textile printing and dyeing: Bleaching assistant to improve dye uniformity
- Metal surface treatment: Component of cleaning agents before electroplating for removing grease and oxides
Frequently Asked Questions
1. What is your payment term?
We can accept T/T and L/C at sight as payment term.
2. Are you able to deliver on time?
Of course! We specialize in this line for many years. Many customers choose us because we can deliver goods on time while maintaining top quality.
3. Do you provide free sample?
Yes, we can provide free samples. You only need to pay the express fee.
4. How about the price? Can you make it cheaper?
We always prioritize customer benefits. Price is negotiable under different conditions, and we assure you the most competitive price.
5. Can I visit your company and factory in China?
Sure. You are very welcome to visit our company in Weifang, China. (We will arrange airport pickup/drop-off at Weifang Airport)
6. What if there is a quality problem?
We have a professional and perfect after-sales service team to promptly address all issues.