... faster CHEMICAL NAME: Sodium Hexametaphosphate Property:white powder,density is 2.484(20 degree C),easily soluble in water,but not on ... ,Mg,Cu and Fe;It is a fine agent for water treatment.Specification: itemsIndustrial gradeFood gradeTotal phosphate (P2O5)68% min68% minInactive ... .Furthermore,is should be stored separately from poisonous. HOT SALE! --Sodium Hexametaphosphate 68% for water treatment