Sodium tripolyphosphate 94%(STPP)
Chemical formula:Na5P3O10
Sodium tripolyphosphate is a White particles or powder with good fluidity.It is easily soluble in water, and its aqueous solution is alkaline.
Pay attention to Storage products of sodium tripolyphosphate should be stored in a clean, dry place and away from exposure to air. Hydrolytic reactions take place slowly in moist air.
TECHNICAL INDEX (GB/T 9983-2004)
| Item |
Tech Grade |
Food Grade |
| STPP (Na5P3O10), %≥ |
94.0 |
94.0 |
| (P2O5), %≥ |
57.0 |
57.0 |
| Water insoluble, %≤ |
0.10 |
0.10 |
| Iron (Fe), %≤ |
0.007 |
0.007 |
| Whiteness, %≥ |
90.0 |
90.0 |
| Heavy Metal (as Pb), %≥ |
- |
0.001 |
| (As), %≥ |
- |
0.0003 |
| Fluoride (F), %≥ |
- |
0.003 |
| PH value(10g/L Solution) |
9.2~10.0 |
9.2~10.0 |
Product use:
Sodium tripolyphosphate has chelating, suspending, dispersing, gel dissolving, emulsifying, pH buffering and other functions. It can be used as auxiliary agent of synthetic detergent, industrial water softener, leather pre-tanning agent, dyeing assistant, organic synthesis catalyst, dispersing agent of medical industry and food additive.
At present, its largest use is still as a powder synthetic detergent additives and Ceramic Degumming Agent.
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