1. Product description:
STPP is white powder, apparent density:0.35-0.90g/ml, melting point: 622°C, easily dissolving in water; water solution is alkaline(PH value of 1% solution is 9.7); can hydrolyze into phosphate in water, has good ability in complexing metal ions,; can be used to soften water; has some surfactant properties.
| Item |
Index |
| Tech. Grade |
Food Grade |
| Na5P3O10 (%): |
94Min |
95Min |
| P2O5 (%): |
57Max |
57Max |
| Insolubles in water (%): |
0.15Max |
0.05Max |
| Fe (%): |
0.007Max |
N |
| Ph (1% solution): |
9.2-10 |
9.5-10 |
| Heavy Metal (As Pb) (%): |
N |
0.001Max |
| Arsenic (As) (%): |
N |
0.0003Max |
| Fluoride(F) (%): |
N |
0.003Max |
| Whiteness(%): |
90Min |
90Min |
| Density (g/cm3) |
0.35-0.9 |
0.35-0.9 |
| type content (%) |
10-30 |
10-30 |
For industrial grade: Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather
pre-tanning agent, dye auxiliary agent, and dispersant of suspension such as paint, kaolin, magnesium oxide,
calcium carbonate drilling mud, preservative agent for paper making, organic synthesis catalyze, also used in
epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical
industry.
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