Packing and storage: In 25kg, 50kg, 1000kg net bags.
We can supply both food grade and tech grade STPP

Specifications     Food Grade 
AssayNa5P3O10 % ≥   95.0
P2O5          % ≥   57.0 
Water Insoluble Matter %≤ 0.05
Iron(Fe)      % ≤   0.01
PH value(1%water solution)9.5-10.0 
Heavy Metal (as Pb)  10ppm
Arsenic (As)   3ppm
Fluoride (F)   30ppm
Whiteness %≥         90.0