3H3PO4 + 5NaOH = Na5P3O10 + 7H2O
6H3PO4 + 5Na2CO3 = 2Na5P3O10 + 5CO2 + 9H20
Sodium triphosphate is the sodium salt of the polyphosphate, which is the conjugate base of tri-phosphoric acid. STPP is a colorless salt, which exists as anhydrous and also as hexahydrate. Its wide spread use is well known in detergent industries. The most common method of preparation is by reacting Mono Sodium and Disodium Phosphates.
Product Name | Sodium Tri polyphosphate (STPP) Anhydrous |
IUPAC Name | Pentasodium tri-phosphate |
Molecular Formula | Na5P3O10 |
Molecular Weight | 368 |
Molecular Structure | |
Appearance | White fine Powder |
PH Range (1% w/v) | 9.3 to 10.1 |
Poly % (minimum) | 90.00 |
P2O5 content % (minimum) | 56.00 |
‘Na’ Content % (minimum) | 30.00 |
Iron as ‘Fe’ content % | 0.02 |
Chloride as ‘Cl’ content % | 0.2 |
Sulfate as ‘SO4’ content % | 0.03 |
Packing | 20 Kg, 25 Kg, 40 Kg, 50 Kg, HDPE Bags / Drums. Or As per customer’s request |