Sodium Tripolyphosphate (STPP)
Molecular formula: Na5P3O10
Molecular Weight: 367.86 (in accordance with the international atomic weight in 1985)
Physical properties: sodium tripolyphosphate is a white powder-like particles, and the apparent density 0.35-0.90g/cm3, melting point 622 degrees Celsius. Soluble in water, insoluble in ethanol.
Alkaline aqueous solution was 1% aqueous solution PH 9.7. Can soften hard water. Inorganic as a surfactant, a certain organic nature of surfactant.
Main purposes: with integrated suspension, dispersion, gel melting, emulsifying, PH, such as the role of a buffer. Mainly used as an additive synthetic detergent, soap synergist and
prevent precipitation and articles from soap oil cream. Environment on oil and oil emulsion has a strong role in the buffer liquid soap can be used to adjust the PH value of water for industrial
use soft water, leather pre-tanning agents, dyeing auxiliaries, paint, kaolin, magnesium oxide, calcium carbonate.