crotonaldehyd

Crotonaldehyde is an organic compound with the chemical formula CH3CH=CHCHO. It is a colorless liquid with a pungent, acrid odor. It is also known as crotonic aldehyde or trans-2-butenal. It is an unsaturated aldehyde, meaning it contains both a carbon-carbon double bond and an aldehyde functional group.

Crotonaldehyde is produced commercially by the aldol condensation of acetaldehyde. This reaction involves two molecules of acetaldehyde combining to form 3-hydroxybutanal, which then dehydrates to yield crotonaldehyde. It is an important intermediate in the synthesis of various chemicals.

This compound is flammable and its vapors can form explosive mixtures with air. It is also toxic and irritating to the skin, eyes, and respiratory tract. Exposure can cause coughing, shortness of breath, and chemical burns. Due to its hazardous nature, crotonaldehyde should be handled with appropriate safety precautions, including good ventilation and personal protective equipment. It is used in the production of sorbic acid, pharmaceuticals, and as a flavoring agent in some food products, although its use is restricted due to its toxicity.