Sodium tripolyphosphateusing glaze and engobe,STPP using also ;detergen ,food,chemical,
Usage:
It is used as one of the main auxiliaries agent for synthetic detergent, synergist for soap. Softener for water in industry. Tanning agent for making leather.
| TESTING PROJECT | INDEX |
| Main Content % | ≥94.0 |
| P2O5 % | ≥57.0 |
| PH of 1% solution | 9.2-10.0 |
| Water insoluble % | ≤0.15 |
| Fe % | ≤0.01 |
| Density | 0.55-0.7 |
Sodium tripolyphosphate (STPP), also known as sodium triphosphate, pentasodium triphosphate, is white powder or crystals in appearance. In general, STPP chemical can be used in a wide range of fields, such as, detergent, petroleum, metallurgy, mining, paper, water treatment and some other industries, as well as food processing industry. As a leading manufacturer and exporter, Chemate can provide high-quality industrial and food grade sodium tripolyphosphate 94% for global customers. Please contact us to get the latest STPP price now.
| Items | STPP Industrial grade | STPP Food grade |
| Main contents (Na5P3O10 )%≥ | 94.0 | 94.00 |
| Phosphorus pentoxide（P2O5） %≥ | 56.5 | 57.0 |
| Water insoluble %≤ | 0.15 | 0.10 |
| Fe %≤ | 0.015 | 0.015 |
| PH value of 1% solution | 9.2-10.0 | 9.4-10.0 |
| Heavy metals, as Pb %≤ | / | 0.001 |
| Arsenic,as As %≤ | / | 0.0003 |
| Fluoride, as F %≤ | / | 0.003 |
| Whiteness %≥ | 85 | 85 |
SODIUM TRIPOLYPHOSPHATE or STPP is an inorganic compound. It is the sodium salt of the polyphosphate which is the conjugate base of triphosphoric acid. Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4 and monosodium phosphate, NaH2PO4 under carefully controlled conditions.