... .CAS:10124-56-8 2.Formula:NaPO3)6 3.purity:68% 4.SGS inspection 1.sodium hexametaphosphate2.Technical Specifications:No Specification ... grade 1 Total phosphate, as P 2 O 5 %≥ 68.0 68.0 2Inactive phosphate,as P 2 O 5 %≤ 7.5 ... -6.5 5 Solubility Qualified Qualified 6 Heavy metal, as Pb, %≤ - 0.001 7 Arsenic, as As, %≤ - 0.0003 8 Fluoride ...