It is mainly used in production of formic acid, oxalic acid, Sodium hydrosulphite, formamide, leather industry and oil field. Item Index GradeHigh-classFirst-classQualified-classAppearanceWhite crystalWhite crystalCrystal with slight ColorMoisture,%,≤2.03.03.0Organic Substance (by butt),%,≤2.55.08.0Sodium formate (by butt),%,≤979590.0Chloride (by butt),%,≤0.51.02Content of Fe(by butt),%,≤0.050. ...