Glycerine

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Glycerine is a chemical substance with three carbons, each carrying an alcohol (-OH) substituent.

A byproduct of saponification, this clear, slippery liquid is produced by hydrolysis of three ester likages and loss of three equivalents of fatty acid from fat or biological oil.

   H
   |
   |
H--C--OH
   | H
   |/
H--C--OH
   |
   |
H--C--OH
   |    
   |
   H

or

   CH2-OH
   |
   CH2-OH
   |
   CH2-OH