petroleum, chemistry, metallurgy and construction materials etc. As a water softening agent in solution for printing, floating agent, dispersing medium and high temperature agglomerant.
Sodium Hexametaphosphate Food
Grade 
(1) Total phosphate, as P2O5: 68.0% min.
(2) Inactive phosphate, as P2O5: 7.5% max.
(3) PH of 1% water solution: 5.8-6.5
(4) Solubility: Qualified
(5) Water insoluble: 0.0 6% max.
(6) Arsenic, as As: 0.0003% max.
(7) Fluoride, as F: 0.003% max. 
(8) Heavy metal, as Pb: 0.001% max.
(9) Iron, as Fe: 0.05% max.
Usage: Mainly used as additive agent,PH adjusting agent, fermenting agent,and nourishment, etc.
Packing: 25kg/ bag or as your requirements.22 ton in 20'FCL.
HS CODE: 28353911