... Acid; Hydrogen Carboxylic Acid; Aminic AcidFormulaCH2O2CAS No.: 64-18-6Drawback5%HS Code: 29151100UN NO: 1779Dangerous Good Class8RTECS No.: LQ4900000Technical Standard: GB/T 2093 ... resister, etc. 4 Leather industryTanning, etc. 5 Textile industryNatural Rubber. 6 Rubber industryCoagulation, etc. 7 Steel industryAcid cleaning of steel production ...