Sodium Tripolyphosphate
Molecular Formula: Na5P3O10
Molecular Weight: 367.86
CAS Number: 7758-29-4
Alias : STPP
Customs Codes:28353190
Characteristics:
- Melting point: 622°C
- Easily soluble in water, with aqueous solutions being alkaline
- Gradually hydrolyzes into orthophosphoric acid in water
- Has a good ability to complex with metal ions
- Can chelate with calcium, magnesium, iron, and other metal ions to form soluble complexes
- Can soften hard water
- As an inorganic surfactant, it has some properties of organic surfactants
Description
Product Applications
Water Softener, Acts as a chelating agent, pH regulator, dispersant, and anti-redeposition agent.
- Detergent Additive: Enhances the performance of detergents.
- Soap Enhancer: Prevents the precipitation and frosting of fatty acids in bar soaps, and adjusts the pH buffer of soap solutions.
- Ceramic Industry: Functions as a deflocculant and water reducer in ceramic processing.
- Leather Tanning: Used as a pretanning agent in leather processing.
- Dyeing Aids: Serves as an auxiliary agent in dyeing processes.
- Dispersant: Applied in the treatment of suspensions such as paint, magnesium oxide, and calcium carbonate.
- Oil Drilling: Acts as a dispersant in petroleum drilling muds.
- Industrial Applications: Used as an anti-redeposition agent in metallurgy, mining, papermaking, and other industries.
- Water Treatment: Functions as a water treatment agent.
Packaging, Storage, and Transportation
- Available in 25kg, 50kg, 1000kg, 1200kg, 1250kg bags with customizable options.
- Store in a dry, well-ventilated area, and avoid exposure to moisture. It retains its quality during long-term storage, and any clumping can be resolved by crushing or dissolving before use.
- Non-toxic and non-hazardous, it can be transported by road, sea, or rail as general cargo.
Specifications:
| Item | Top Grade | First Grade | Second Grade |
|---|---|---|---|
| Main content (Na5P3010)，% ≥ | 94 | 90 | 85 |
| P2O5，%> | 57 | 56 | 55 |
| Water insoluble，% ≤ | 0.1 | 0.1 | 0.15 |
| Iron (Fe)，% ≤ | 0.007 | 0.015 | 0.02 |
| Whiteness，% > | 90 | 85 | 80 |
| pH value (10g/L) | 9.2-10.0 | ||
| Classification | |||
| Granularity | L | M | H |
| ，g/cm3 | 0.35-0.50 | 0.51-0.65 | 0.66-1.2 |
| Phase I ，% | A | B | C |
| 0-20 | 21-40 | ＞40 | |
| Appearance | White powder, hollow granular, solid ball | ||
| Various specifications can be customized according to customer needs | |||
