What are the sodium tripolyphosphate use?

Mainly used in the food industry meat, canned meat, fruit drinks, dairy products, soy milk, etc. for quality improver, personal care, cleaning supplies additives.

White powder, melting point 622 ℃, soluble in water, calcium and magnesium and other metal ions have significant chelating ability, can soften hard water to make suspension into solution, slightly alkaline, non-corrosive, is an inorganic surface active agents, oil and fat of a strong emulsification, the bulk density is usually divided into a low density 0.35-0.5g/cm 3, the density of 0.51-0.65g/cm
3, high-density 0.66-0.9g/cm 3; STPP type I (high temperature type) and type II (low temperature)

Two crystalline forms, both of the same chemical nature, except that the thermal stability and hygroscopicity than Type I Type II, while both the solubility of the heat of hydration is different dissolution.