Exp016GSreport

Why is glycerol used instead of water in the bath used to heat the reaction mixture?
From the log of EXP016: Glycerol bath was placed on hot plate (setting 3.5).

Glycerol is used in the bath to heat the phosphoric acid solution of adrenaline to a temperature of 120 C. Water would boil off at [|100 C]. Glycerol boils much higher at [|290 C] because has three hydroxyl groups that can form extensive networks of hydrogen bonds. We have seen in [|lecture 7] that more hydrogen bonding increases the strength of the interaction between molecules and thus raises the boiling point.




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