Sodium tripolyphosphate (stpp)---tech grade
Assay na5p3o10 % : 94.0 min
P2 o 5 % : 57.0 min
Water insoluble matter % : 0.15 max
Iron(fe) % : 0.015 max
Ph value (1% water solution): 9.2-10.0
Whiteness % : 90 min
Ignition loss: 1.0
Density (g/cm3) 0.35-0.9
Phase i :10-30
Sodium tripolyphosphate (stpp)---food grade
Assay na5p3o10 % : 94.0 min
P2 o 5 % : 57.0 min
Water insoluble matter % :0.05 max
Iron(fe) % : 0.015 max
Ph value (1% water solution) :9.5-10.0
Heavy metal (as pb) % : 0.001 max
Arsenic (as) %: 0.0003 max
Fluoride (f) %: 0.003 max
25kg/pp pe bag