formic acid use for formate,formic acid esters,formamide,also medicine,printing and dyeing, ... -in solubleUse: Preparation for formate,formic acid esters,formamide,also medicine,printing and dyeing,dyeing,leather,and other industrial uses.Package:25 ... evaporation residue % ≤ 0.006 ≤ 0.020 formic acid 85% min for Industrial Grade