Examples from the Web for acetaldehyde
The substance investigated was acetaldehyde, C2H4O, in its relation to paraldehyde, a polymeric modification.
For this reason it is possible to determine the freezing point curves of acetaldehyde and paraldehyde.
Acetaldehyde is not of much importance in itself, but is useful as a transition.Creative Chemistry|Edwin E. Slosson
This is in harmony with the fact that the polymerisation of acetaldehyde is accompanied by evolution of heat.
The decomposition of pyruvic acid into acetaldehyde and carbon dioxide has already been fully discussed (Chapter VI).Alcoholic Fermentation|Arthur Harden