... ,textile,dyeing,chemistry,metallurgy&construction materials Sodium Hexa Meta Phosphate (SHMP)CAS No.: 10124-56-8 Chemical formula ... : white powderSodium Hexametaphosphate Industrial Grade Total phosphate, as P2O5 68.0% min. Inactive phosphate, as P2O5 7.5% max. ... high temperature agglomerant.Sodium Hexametaphosphate Food Grade Total phosphate, as P2O5 68.0% min. Inactive phosphate, as P2O5 7.5% max ...