Physical and chemical properties：
Sodium tripolyphosphate is a white, glossy granular powder with a melting point of 622°C. It is highly soluble in water and exhibits significant chelating capacity for metal ions such as calcium and magnesium. This compound can soften hard water, convert suspensions into solutions, and possesses weak alkalinity without corrosive properties.
Applications：
Sodium tripolyphosphate is used as the main auxiliary agent in synthetic detergents, a soap synergist, a water softener, a leather pretanning agent, a dyeing auxiliary agent, an effective dispersant for the treatment of suspensions such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, an oil stain preservative for papermaking, and a catalyst for organic synthesis. It is also used in petroleum product refining, the storage of rubber latex, and as a dispersant and solubilizer in the metal industry and pharmaceutical industry. Additionally, sodium tripolyphosphate has extensive applications in synthetic rubber, the food industry, and poultry processing.
| Specifications | Industrial Grade | Food Grade | |
|---|---|---|---|
| Packing: | 25kg/bag, in woven or kraft paper bags with inner bag,or as customer's requirement. | ||
| Appearance | White powder or granule | White powder or granule | |
| Assay(Na5P3O10) % | ≥94 | ≥95 | |
| P2O5 % | ≥57 | ≥57 | |
| Whiteness % | ≥90 | ≥90 | |
| Fe % | ≤0.01 | / | |
| As % | ≤0.001 | ≤0.0003 | |
| Heavy metal(as Pb) % | ≤0.002 | / | |
| pH(1%sol.) | 9.2~10.5 | 9.2~10.5 | |
| Water insoluble % | ≤0.1 | ≤0.05 | |
| Loss in ignition % | ≤1.0 | ≤2.0 | |
Transportation conditions: It is strictly prohibited to mix and transport with oxidants, acids, edible chemicals, etc. During transportation, exposure to sunlight, rain, and high temperatures should be prevented. The vehicle should be cleaned after transportation. For road transportation, it shall follow the specified route. Air transportation: Sodium tripolyphosphate can be handled under ordinary cargo conditions.
Storage conditions: It should be stored in a cool and dry place. Attention should be paid to protecting it from sunlight, moisture and package damage. It is recommended to stack it on shelves or single-layer pallets.
Shelf life: Under the above storage and transportation conditions, the shelf life is 12 months.
