- a colorless, easily polymerized, water-insoluble liquid, C4H6O2, produced by the reaction of acetylene and acetic acid: used chiefly in the manufacture of plastics, films, paints, and adhesives.
- a colourless volatile liquid unsaturated ester that polymerizes readily in light and is used for making polyvinyl acetate. Formula: CH 2 :CHOOCCH 3
