
PHOSPHATES
TRISODIUM POLYPHOSPHATE
Product Category: PHOSPHATES
Product: TRISODIUM POLYPHOSPHATE Product Code: F008
Information on Trisodium Polyphosphate
Sodium Tri Polyphosphate is a derivative of Phosphoric Acid and a white powder that is reasonably soluble in water. It should be stored in a tightly closed container.
Synthesis / Manufacturing Process of Trisodium Polyphosphate
The major raw material for all phosphates is phosphoric acid, which is manufactured from rock phosphates. The phosphoric acid slurry is mixed with sulfuric acid, which is added to a reactor as a leaching agent. After the reaction, the process stream is washed with evaporator condensate while being forced through a filter. The filter cake is composed primarily of gypsum (CaSO4.2H2O). The phosphoric acid is concentrated to 75-100% by a series of evaporators and then cooled. Sodium Tri Polyphosphate is manufactured by heating a stoichiometric mixture of Disodium and Monosodium Phosphate under controlled conditions.
Specifications:
CAS NO. | 7601-54-9. |
HSN No. | 28353100. |
Synonyms | Sodium Tri Polyphosphate; STPP. |
Molecular Formula | Na5P3O10. |
Molecular Weight | 367.86. |
Appearance | The document provides no appearance information, but lists the product code as “STPP Na” |
Solubility | Soluble in water. |
Assay | 56.0% Min. |
pH | 9.0-9.5. |
Packing | 25 Kg. HDPE Bags / Drums. |
Uses / Applications of Trisodium Polyphosphate
Sodium Tri Polyphosphate is used as a water softener, a sequestering agent in metal treatment, and in food applications. It is also used in paper manufacturing, dyeing, and tanning applications.
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