industry nitrate 99.3% 1) purity:99.3%, 2)appearance:white crystal 3) good quality in competitive price 4) ISO9001 industry nitrate 99.3%Property:Appearance:White tiny ... First class grade Qualified gradeSodium nitrate(based on dried basis),%≥ 99.7 99.3 98.5 Water content,% ≤ 1.0 1.5 2 ... ),%≤ 0.05 0.10 ----- Ferrum(Fe),%≤ 0.005 industry nitrate 99.3%min