... is mainly used in production of formic acid, oxalic acid, Sodium hydrosulphite, formamide, leather industry and oil field. Item Index GradeHigh ... .55.08.0Sodium formate (by butt),%,≤979590.0Chloride (by butt),%,≤0.51.02Content of Fe(by butt),%,≤0.050.050.10 sodium formate 95%