Product: STPP; Sodium Tripolyphosphate
Chemical formula: Na5P3O10
Molecular weight: 367.86
Standard executed: GB9983-88
Properties:
1. Appearance: white powder;
2. Melting point: 622oC;
3. Solubility: easily soluble in water, with remarkable chelating ability to some metal ions such as Ca2+Mg2+
4. Without causticity.
Technical Specifications:
|
No
|
Specifications
|
Tech Grade
|
|
1
|
Appearance
|
White powder
|
|
2
|
Main content
|
94.0% min.
|
|
3
|
P2O5
|
57.0% min.
|
|
4
|
Water insoluble
|
0.1% max.
|
|
5
|
Iron, as Fe
|
0.015% max.
|
|
6
|
pH of 1% water solution
|
9.2-10.0
|
|
7
|
Density(g/cm3)
|
0.8-1.0
|
Application:
1. Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, as dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, and as preservative agent for paper making, organic synthesis catalyzer;
2. Used in epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical industry;
3. Also widely used in gum synthesis, foodstuff industry, and poultry process