... % acetic acid, 60°C, 2h≤30 mg/L<2.5 mg/LGB/T5009.60-2003265% ethanol, normal temperature ... .60-20033n-hexane , normal temperature ,2h≤30 mg/L9.3 mg/LGB/T5009.60-20034Permanganate Consumption, distilled water , ... 60°C, 2h≤10 mg/L0.93 mg/LGB/T5009.60 ... 4% acetic acid, 60°C, 2h≤1 mg/L<1 mg/LGB/T5009.60-20036Tolylenediamine, water , 100°C, ...