methacrolein

Methacrolein is an organic compound with the chemical formula C4H6O. It is a volatile, colorless liquid with a pungent, acrid odor. Methacrolein is classified as an unsaturated aldehyde, meaning it contains both a carbon-carbon double bond and an aldehyde functional group.

It is primarily produced industrially as an intermediate in the synthesis of other chemicals. A major route for its production involves the catalytic oxidation of isobutylene or tert-butanol. Methacrolein is a key building block in the production of methacrylic acid and its esters, which are widely used in the manufacturing of polymers, resins, and coatings. These polymers find applications in paints, adhesives, plastics, and plexiglass.

Methacrolein is a reactive compound due to its unsaturated nature. It can undergo various chemical reactions, including polymerization and addition reactions. It is flammable and its vapors can form explosive mixtures with air. Due to its irritating properties, exposure to methacrolein can cause irritation to the eyes, skin, and respiratory tract. Workplace exposure limits are established to minimize health risks.