sodium tripolyphosphate

Product name: STPP;tripolyphosphate;sodium tripoly phosphate; Chemical formula: Na5P3O10 Molecular weight: 367.86 CAS No.

7758-29-4 Appearance: white microdot with luster Melting point : 622 degree centigrade Solublity：easily soluble in water, with remarkable chelating ability to some metal ions such as Ca2+, Mn2+; Standard executed: GB9983-88 Specification: index Technical grade Food grade Main content 94.0%min 94.0%min P2O5 57.0%min 57.0%min Water insoluble 0.1%max 0.05%max Iron as Fe 0.015%max 0.01%max Ph of 1%water solution 9.2-10.0 9.5-10.0 Density(g/cm3) 0.8-1.0 0.8-1.0 Heavy metal as Pb 0.001%max Arsenic,as As 0.0003%max Fluoride,as F 0.003%max Chloride,as Cl 0.025%max Application: 1. used as main auxiliary of synthetic wash,soap synergistic agent,water softener,leather pre-tanning agent,dye suxiliary agent,as dispersant of suspension such as paint,kaolin magnesium oxide,calcium carbonate drilling mud,and as preservative agent for paper making,organic synthesis catalyzer; 2. used in epuration of petroleum product,gum latex storage,as dispersant,solvent in metal industry and pharmaceutical industry; 3. also widely used in gum synthesis,foodstuff industry,and poultry process packaging:25kg in plastic woven bag with polythene liner;stored in ventilated and dry place.