Glycerol boils at 290,^oC with slight decompo | vedclass

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(C) Liquids that decompose at or near their boiling point are purified by vacuum distillation. Since glycerol decomposes at its normal boiling point o

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Vacuum distillation

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(C) Liquids that decompose at or near their boiling point are purified by vacuum distillation. Since glycerol decomposes at its normal boiling point of $563\,K$ $(290\,^oC)$,it is distilled under reduced pressure. By lowering the pressure to $12\,mm\,Hg$,the boiling point of glycerol is reduced to $453\,K$,allowing it to be distilled without decomposition.

Glycerol boils at $290\,^oC$ with slight decomposition. Impure glycerin can be purified by:

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