... ,ISO9001 3.high effect transport and satisfied service formic acid 85%minCAS RN:64-18-6Molecular Formula:CH2O2Properties ... and ether,benzene-in solubleUse: Preparation for formate,formic acid esters,formamide,also medicine,printing and dyeing,dyeing, ... 0.003 0.005 Sulphates ( Based on the SO4 ) % ≤ 0.001 0.002 Iron ( Based on the Fe ) % ≤ 0.0001 ≤ 0.0005 evaporation residue % ≤ 0.006 ≤ 0.020 formic acid ...