Phosphates

SODIUM TRI POLYPHOSPHATE

Product Category :

PHOSPHATES

Product :
Sodium Tri Polyphosphate

Product Code : F008

Information on Sodium Tri Polyphosphate

Sodium Tri Polyphosphate is a derivative of Phosphoric Acid. Sodium Tri Polyphosphate is moderately soluble in water. Sodium Tri Polyphosphate is a white crystalline powder. Sodium Tri Polyphosphate decomposes at 622oC. It should be stored in tightly closed containers in a Room Temperature.

Synthesis / Manufacturing Process of Sodium Tri Polyphosphate

The major raw material to all the phosphates is Phosphoric Acid. Phosphoric Acid is manufactured from Rock Phosphate. Phosphate rock is fed to a series of reactors along with recycled phosphoric acid from the process. The phosphoric acid-fluoroapatite slurry is mixed with sulphuric acid which is added to the reactor series as a leaching agent. After completing the reaction series, 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 stoichiometric mixture of Disodium Phosphate & Monosodium Phosphate under controlled conditions.

Specifications :

CAS NO.

7558-29-4.

HSN No.

28353100.

Synonyms

Sodium Tri Polyphosphate; STPP.Na3PO4

Molecular Formula

5Na.O10P3

Molecular Structure

Molecular Weight

367.86.

Appearance

367.86.

Solubility

Soluble In Water.

Assay

94.0% Min.

P2O5 Content 56.0% Min.
pH 9.0 – 10.5.
Packing 25 Kg. HDPE Bags / Drums.

Uses / Application of Sodium Tri Polyphosphate


Sodium Tri Polyphosphate is used as a Water softener; as a Tanning agent; in a Metal Treatment application & in Food application.

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