Purification and drying of liquids

For most liquids the method of choice for both purification and drying is distillation. In many cases the liquid is either dried over a drying agent before distillation or distilled from a drying agent (see also Chapter 5). 

Purification of Laboratory Chemicals, 3rd ed., D.D. Perrin and W.L.F. Armarego, Pergamon Press, Oxford, 1988, 

Reagents for Organic Sy nt he sisJVols. 1-13, Fieser and Fieser, Wiley, New York. 

Methyl iodide CaCl2 before dist. 43 Very toxic Wash with Na2S203 or pour through alumina first to remove I2 

Isobutyraldehyde CaSOa before dist. 62 readily oxidized 

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