Sodium Hexametaphosphate (SHMP) 1,Manufacturer 2,Free sample 3,68%,white powder 4,High quality and competitive price Sodium Hexametaphosphate (SHMP) No.SpecificationsIndustrial GradeFood Grade1Total phosphate, as P2O5%>=68.068.02Inactive phosphate, as P2O5%<=7.57.53Iron, as Fe %<=0.050.054Ph value (1% solution) %<=5.8-7.35.8-6.55SolubilityQualifiedQualified6Heavy metals, as Pb %<= 0.0017Arsenic, ...