16.1 What are the best drying agents for liquids and gases? (Chemistry)
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This article is from the Chemistry FAQ, by Bruce Hamilton B.Hamilton@irl.cri.nz with numerous contributions by others.
16.1 What are the best drying agents for liquids and gases? (Chemistry)
The Rubber Handbook lists the traditional information on drying agents
that involve on chemical action. This lists phosphorus pentoxide and
magnesium perchlorate as the most effective desiccants. However, later
work by Burfield [1-9] has demonstrated that much of the traditional
information is misleading. He found that the efficiency of the desiccant
is strongly dependent upon the solvent. He also found that Drierite
( anhydrous calcium sulphate ) is only a moderately efficient desiccant for
organic solvents [9], and that correctly prepared molecular sieves are
often the preferred desiccant [2]. His publications are highly recommended.
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