CH3CHCO

CH3CHCO is the chemical formula for propenal, also commonly known as acrolein. It is an unsaturated aldehyde with the chemical formula CH2=CHCHO. Propenal is a colorless, volatile liquid with a pungent, irritating odor. It is highly reactive due to the presence of both a carbon-carbon double bond and an aldehyde group.

Propenal is produced industrially primarily through the selective oxidation of propylene. This process is typically carried out using catalysts such as bismuth molybdate. It is also a byproduct of incomplete combustion of organic materials, contributing to air pollution.

Due to its high reactivity and toxicity, propenal is used as a chemical intermediate in the synthesis of various compounds. It is a precursor for the production of acrylic acid, methionine (an essential amino acid), and certain polymers. Its irritating properties make it a tear gas and an effective biocide, although its use in these applications is restricted due to health concerns. Exposure to propenal can cause irritation to the eyes, skin, and respiratory tract.