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Sodium Tripolyphosphate(STPP)

Byname:Pent-sodium Phosphate

Molecular formula: Na5P3O10

Molecular Weight: 367.86

Standard executed: QB1034-91(food grade)

CAS Number: 7758-29-4


White powder; Melting point 622°C; Easily soluble in water; It has got salient chelating capacity to ions of Ca and Mg etc. and can soften hard water to make suspension solution become into clear solution; It has got weak alkalinity but no corrosiveness. It is a surfactant, and has got outstanding emulsification to lubricants and fat. It has different bulk density, i.e. low density 0.35-0.5g/cm3, medium density 0.51-0.65g/cm3 and high density 0.66-0.9g/cm3. This product has two crystalline forms, namely Type I (high temperature type) and Type II (low temperature type). The chemical properties of the two types are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving .


In foodstuff industry it is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans. It may tender the meat in canned ham and soften the skin of horse bean in canned horse bean. It may also serves as a softener or densifier in foodstuff industry.

Packing and storage:

In 25Kg,50 Kg,1000 Kg bags. store at a cool, dry and well ventilated place.


NO. Specifications TECH GRADE
1 Main contents % ≥ 95.0
2 P2O5 % 57.0
3 Fe % ≤ 0.01
4 PH of 1% water solution 9.5-10.0
5 Chloride, as cl % ≤ 0.003
6 Heavy metal, as Pb % ≤ 0.001
7 Arsenic, as As % ≤ 0.0003
8 Fluoride as F % ≤ 0.003
9 Water insoluble % ≤ 0.05
Corresponding parameter set not found, please add it in property template of background
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Company Name: Sichuan Olliance Technology Co., Ltd

Tel: +86-13880899368

QQ: 4265077

E-mail :4265077@qq.com

Factory add: Yongning village Shuangsheng Town,Shifang city,Sichuan Province,China

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