By certification 
CAS NO:7758-29-4 Specifications
STPP is one of our main product. STPP in Granular can quickly dissolve in water. Which widely used in food processing.
Sodium tripolyphosphate is a white ganular material, it can flow freely, Free from extraneous material.
No foreigh flavour.No foreigh Odour. Freely soluble in water, Insoluble in ethanol.
Which complies with the specifications of QB1034-1991, FCC and EC Directive for food additives.
Which widely used in meat , aquatic products. Used in food processing as quality improver, PH regulator, buffer, sequestrant and emulsifier.
Packing is kraft paper bags with inner PE bags.
Please see attached Specifications of STPP:
| INDEX | UNIT | SPECIFICATIONS | RESULT |
| Grade | food class | confirm | |
| Appearance | white powder | confirm | |
| dissolubility( in water) | pass | confirm | |
| PH(10g/L aq.soln) | 9.0-10.2 | 9.8 | |
| Purity | % | 95.0min | 96.5 |
| P2O5 | % | 56.0-59.0 | 57.3 |
| alkalinity (10g/L aq.soln) | ml | 5.1-5.5 | 5.4 |
| Fe | ppm | 100(max) | <100 |
| As | ppm | 3(max) | <3 |
| Heavy metal(as Pb) | ppm | 2(max) | <2 |
| Pb | ppm | 5(max) | <2 |
| Cd | ppm | 1(max) | <1 |
| Cr | ppm | 1(max) | <1 |
| Hg | ppm | 1(max) | <1 |
| *Above Typical data can not regard as specification, only as reference. | |||
