Sodium tripolyphosphate, the chemical name, also known as sodium triphosphate, is an important auxiliary agent in synthetic detergents, which is formed by the condensation of different sodium hydrogen phosphate molecules. Sodium tripolyphosphate is a white powder crystal with good fluidity. Because there are 5 sodium atoms in its molecule (Na5P3O10), it is commonly known as pentasodium. Sodium tripolyphosphate is easily soluble in water, and its aqueous solution is alkaline, so most of it is used for synthetic detergents, and a few are used for softening of food and industrial water.
Items | Specification | Test result |
Na5P3O10: | 94%min | 94.3% |
P2O5: | 57%min | 57.2% |
Insoluble in water: | 0.1%max | 0.04% |
Fe: | 0.015%max | 0.005% |
Ph (1% solution): | 9.2-10 | 9.7 |
Whiteness: | 90%min | 94.4% |
Bulk density: | 0.65-1 g/cm3 | 0.82 |
Phase I: | 15-40 | 25 |
Loss in ignition | 0.5%max | 0.26% |
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