Esters () are the derivative of carboxylic acids in which the –OH group of the carboxylic acids has been replaced by –OR group. There general formula is CnH2n+1COOCnH2n+1. For example,
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Preparation of Esters
Esters can be prepared by reacting acetic acid with ethanol in the presence of conc. H2SO4 as catalyst. This process is called esterification.
Uses of Esters
Following are the uses of esters:
- Esters are used as artificial fruit flavours for making essences in cold drinks, ice-creams and sweets etc.
- Esters are used as solvent for oils, fats and varnishes.
- Esters are also used in making artificial perfumes.
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