Sodium Tripolyphosphate

STPP  cas  7758-29-4

food grade tech grade
STANDARD  GB1034-91 VALIDITY Two Years
ITEMS SPECIFICATION RESULTS
Assay Na5P3O10 %   94.0 Min. 95.56
P2 O 5 %   56.5 Min. 57.08
Water Insoluble Matter %  0.05 Max. 0.03
Iron(Fe) %  100ppm Max. 17ppm
PH value (1% water solution)  9.5-10.0 9.72
Heavy Metal (as Pb) % 10ppm Max. 2ppm
Arsenic (As) % 3ppm Max. 2ppm
Fluoride (F) % 30ppm Max. 9ppm
Whiteness %   90 Min. 91.12
density  0.65 to 0.9 0.81