Sodium Hexametaphosphate SHMP tech grade Appearance: White power Specification: Total phosphate as P2O5: 68% min Inactive phosphate as P2O5 : 7.5% max Iron: 0.05% max PH value( 1% solution) : 5.8-7.3 Water insoluble: 0.05% max Packing: 25kg/ bag, 22MT/ 20FCL Contact : Jessica Email ; ilovechemical( at) 163 com Jessica( at) lianchengchem( dot) com