Specification :

1. Appearance : White Powder
2. Purify: 68%
Index name Industrial grade Food Grade
Main content( based on P2O5) % e 68.0 68.0
Inactive phosphate( based on P2O5) % e 7.5 7.5
PH value( 1% aqueous solution) 5.8-7.3 5.8-6.5
Iron( Fe) % d 0.05 0.05
Solubility Qualified Qualified
Arsenic( based on As) % d ---- 0.0003
Fluoride( based on F) % d ---- 0.003
Heavy metal( based on Pb) % d ---- 0.001
Water insoluble% d 0.05 0.06
Uses: SHMP is used as a sequestrant and has applications with in a wide variety of industries, including as a food additive in which it is used under the E number E452i. Sodium carbonate is sometimes added to SHMP to  raise the pH to 8.0-8.6, which produces a number of SHMP products used for water softening and detergents. Also used as a dispersing agent to break down clay and other soil types. One of the lesser-known uses for sodium hexametaphosphate is as a deflocculant in the making of Terra sigillata, a ceramic technique using a fine particled slip. The sodium hexametaphosphate causes the heavy particles in the slip to drop to the bottom allowing the fine particles to be siphoned off and applied to a green ware ceramic surface. Sodium hexametaphosphate is also a whitening  ingredient included in some whitening toothpastes and mouthwashes