Chemical formula: (NaPO3)6
CAS Number: 10124-56-8
Standard executed: Tech grade (HG/T2837-1997)  Food grade (GB 1890-2005)
Packing and storage:In 25kg, 50kg, 1000kg net bags, store at a cool, dry and well ventilated place.

specifications  Food   Grade
Appearance      white powder
Total phosphates (as P2O5 )% ≥ 68
Inactive Phosphates (as P2O5 )%≤7.5 
Iron (Fe) % ≤ 0.05 
PH Value                5.8-7.3
Heavy Metals (as Pb)        10ppm 
Arsenic (As)        3ppm 
Fluoride (as F)        30ppm
Water Insoluble matter % ≤    0.05
Polymerization           9-21

We can also supply industrial grade SHMP
welcome to contact us at anda1002(at)gmail(dot)com