Crotonic acid can be made by crotonaldehyde oxidized,and crotonaldehyde widly exists asthe accessory substance in the chemical enterprises that produce and use aldehyde.

• 丁烯酸可由丁烯醛氧化制得,而丁烯醛在生产和使用乙醛的化工企业作为副产物广泛存在,是一种需治理的废弃物,我国具有生产丁烯酸的原料条件。