Drying Ability of Anhydrous Sodium Sulfate on Wet Organic Solvents after Liquid-Liquid Partition

摘要

Water concentration in organic solvents after liquid-liquid partition was determined by the Karl Fischer titration method. N-Hexane and petroleum ether showed quite low levels of water, Such as 0.1 mg/mL. The water concentration in wet ethyl acetate was about 20-30 mg/mL and That in diethyl ether was about 8-10mg/mL. Anhydrous sodium sulfate absorbed about 20-25/100 of the water after vigorous mixing with wet ethyl acetate or diethyl ether.