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paraldehyde 副醋; 副醛; 三聚乙醛 副醋; 副醛; 三聚乙醛 paraldehyde n 1: a colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solvent [synonym: {paraldehyde}, {ethanal trimer}] Paraldehyde \Par*al"de*hyde\, n. [Pref. para- aldehyde.]
(Chem.) A trimer of acetaldehyde ({C6H12O3}), prepared by polymerization of acetaldehyde with hydrochloric and sulfuric acids. It has sedative and hypnotic properties. --MI11 [PJC]
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