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Performance hydrated sodium tripolyphosphate


STPP generated due to different temperatures and high temperature type (I type) and low temperature (II type) of the points, the difference lies in the different bond lengths and angles of the two, six were generated after the type I and type II products hydrated hydrate Na5P3o10.6H2o, under the same conditions, I-type rapid hydration heat generated by high caking phenomenon easily soluble in water, which is due to the presence of sodium tetrakis I ligand structure, the four ligand has a strong affinity for water, whereas type II places a very slow velocity generating hexahydrate in water. 

Sodium tripolyphosphate is quite stable at room temperature, hydrolysis occurs slowly in moist air, the resulting sodium orthophosphate.

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