Sodium Tripolyphosphate (STPP)
Product: Sodium Tripolyphosphate (STPP)
Chemical Name: Pentasodium triphosphate
Formula: Na5P3O10
CAS-Number: 7758-29-4
# | Parameter | Value |
1. | Appearance: Free flowing, non-lumpy, fine smooth white powder, free from visible impurities & grits | |
2. | Tripolyphosphate content as Na5P3O10, % | 94 (+/-0.5) |
3. | Matter insoluble in water, %. max | 0.1 |
4. | Phosphorus as P2O5, % | 56 (+/-0.5) |
5. | Tripolyphosphate content as Na5P3O10 of first phase, % | 35 min – 55 max |
6. | Iron as Fe2O3, % , max | 0.03 |
7. | pH of 1% aqueous solution | 9.5 (+/-0.5) |
8. | ROH 1 minute: the mean value for any supplier, °C | 81 min – 92 max |
9. | ROH 5 minutes: the mean value for any supplier, °C | 84 min – 95 max |
10. | Bulk density, g/ml, max | 1.2 |
11. | Whiteness level, min | 82 |
12. | Particle size distribution
On 425 micron (Tyler 35 mesh or equivalent), % , max Through 150 micron (Tyler 100 mesh or equivalent), % , min |
5.0 75 |
Application: Sodium Tripolyphosphate can be used in detergents, food applications, paper, ceramics, textile, and various other industries.
Packing: In 50kg (+/-2%) bags or 1000kg (+/-5%) big bags, by containers
The above quality parameters and values as for reference only. Please contact us for the most recent technical Data Sheet (TDS) related to this product.