Ethanol C2H6O. Often C2H5OH.
· Ethanol can be made using fermentation of sugar from plants using yeast. Enzymes in yeast convert sugars into ethanol and carbon dioxide.
o Uses renewable resources but produces dilute form of ethanol – fractional distillation has to be used to separate and form pure ethanol.
· Made by hydration of ethene
o Ethene reacted with steam at high temps I presence of catalyst. Ethene obtained from crude oil by cracking.
o Uses non-renewable resources but produces pure ethanol and requires high temps.