Sodium hexametaphosphate
Sodium Hexametaphosphate(Sodium Polyphosphates, Glassy; Sodium Tetrapolyphosphate; Graham’s Salt)
Properties: White powder, relative density is 2.484 (20), easily soluble in water, but not in organic solution, absorbent to dampness, and turn sticky when absorbed dampness in air. It is possible to form solvent compound with metallic ions such as Ca, Ba, Mg, Cu and Fe; It is a fine agent for water treatment.
No. Specifications Industrial Grade Food Grade
1 Total phosphate, as P2O5%≥ 68.0 68.0
2 Inactive phosphate, as P2O5%≤ 7.5 7.5
3 Iron, as Fe %≤ 0.05 0.05
4 Ph value (1% solution) %≤ 5.8-7.3 5.8-6.5
5 Solubility Qualified Qualified
6 Heavy metals, as Pb %≤ 0.001
7 Arsenic, as As%≤ 0.0003
8 Fluoride as F%≤ 0.003
9 Water insoluble %≤ 0.05 0.06 |
