Sodium Tripolyphosphate(stpp)

Sodium trifosphate using glaze and engobe,STPP using also ;detergen ,food,chemical,


It is used as one of the main auxiliaries agent for synthetic detergent, synergist for soap. Softener for water in industry. Tanning agent for making leather.

Main Content %≥94.0
P2O5 %≥57.0
PH of 1% solution9.2-10.0
Water insoluble %≤0.15
Fe %≤0.01

Sodium tripolyphosphate (STPP), also known as sodium triphosphate, pentasodium triphosphate, is white powder or crystals in appearance. In general, STPP chemical can be used in a wide range of fields, such as, detergent, petroleum, metallurgy, mining, paper, water treatment and some other industries, as well as food processing industry. As a leading manufacturer and exporter, Chemate can provide high-quality industrial and food grade sodium tripolyphosphate 94% for global customers. Please contact us to get the latest STPP price now.

 ItemsSTPP Industrial gradeSTPP Food grade
Main contents (Na5P3O10 )%≥94.094.00
Phosphorus pentoxide(P2O5)   %≥56.557.0
Water insoluble  %≤0.150.10
Fe    %≤0.0150.015
PH value of 1% solution9.2-10.09.4-10.0
Heavy metals, as Pb %≤/0.001
Arsenic,as As  %≤/0.0003
Fluoride, as F %≤/0.003
Whiteness %≥8585

SODIUM TRIPOLYPHOSPHATE or STPP is an inorganic compound. It is the sodium salt of the polyphosphate which is the conjugate base of triphosphoric acid. Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4 and monosodium phosphate, NaH2PO4 under carefully controlled conditions.

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