2 Purifying organic liquid / PAG5

The drying agent should •be insoluble in the organic liquid • not react with the organic liquid • Put the distillate of impure product into a separating funnel • wash product by adding either • sodium hydrogencarbonate solution , shaking and releasing the pressure from CO2 produced. • Saturated sodium chloride solution •Allow the layers to separate in the funnel, and then run and discard the aqueous layer. •Run the organic layer into a clean, dry conical flask and add three spatula loads of drying agent (anhydrous magnesium sulphate or calcium chloride) to dry the organic liquid. • Carefully decant the liquid into the distillation flask •Distill to collect pure product Sodium hydrogencarbonate will neutralise any remaining reactant acid. Sodium chloride will help separate the organic layer from the aqueous layer Purifying an organic liquid Separating funnel