... % 3.use for concrete sodium formate1.Sodium formate industry grade2.95 %3.use for concrete Appearance: white powderApplication ... formic acid, oxalic acid, sodium hydrosulphite, formamide, leather industry and oil field. Item index gradeHigh-class productFirst-class ... formic acid, oxalic acid, sodium hydrosulphite, formamide, leather industry and oil field. Item index gradeHigh-class productFirst-class ...