Introduction of sodium tripolyphosphate

Sodium tripolyphosphate is an important synthetic detergent additive, the different molecular condensation of sodium hydrogen phosphate, also known as sodium tripolyphosphate. Because its molecular (Na5P3O10) sodium atom has five, so-called pentasodium. Most used tripolyphosphate synthetic detergent, a few for food and industrial water softening process.

Apparent density of sodium tripolyphosphate (also known as bulk density) is 0.30 ~ 1.10g/cm3. Anhydrous sodium tripolyphosphate as two different configurations, brought some different physical properties, but the same chemical properties. P3O105-is a good complexing agent, with the calcium, magnesium, iron and other metal ions to form soluble complexes.

Sodium tripolyphosphate as a white powder, melting point 622 ℃, soluble in water, calcium and magnesium and other metal ions chelating capacity significantly, can soften hard water, change suspension into solution, slightly alkaline, non-corrosive, is an inorganic surface active agent, oil and fat emulsification strong bulk density is usually divided into low density 0.35-0.5g/cm 3, the density of 0.51-0.65g/cm 3, high density 0.66-0.9 g / cm 3; tripolyphosphate type I (high temperature type) and type II (low temperature) two crystalline forms, both chemically identical, except that the thermal stability and hygroscopicity than type I type II, and both the solubility is different hydration heat when dissolving. 

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