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乙烯基乙炔是由乙炔制造氯丁二烯时的中间产物,它在乙炔聚合反应过程中随同其他不饱和烃类进入工业废水。乙烯基乙炔(CH≡C—CH=CH_2)是无色、易挥发、易聚合的液体,分子量为52.07,比重0.68(20/4),沸点5.3℃。在水中的溶解度很小,20℃时为0.59%(重量)。乙烯基乙炔具有特殊臭气,对粘膜有刺激作用。本实验用的乙烯基乙炔系由某橡胶厂直接供应,实验前再度蒸馏提纯。
Vinyl acetylene is an intermediate product of chloroprene made from acetylene, which enters into industrial wastewater along with other unsaturated hydrocarbons during acetylene polymerization. Vinyl acetylene (CH≡C-CH = CH_2) is a colorless, volatile and easily polymerizable liquid with a molecular weight of 52.07 and a specific gravity of 0.68 (20/4) and a boiling point of 5.3 ° C. Solubility in water is very small, 0.59% by weight at 20 ° C. Vinyl acetylene has a special odor, a stimulating effect on the mucous membrane. Vinyl acetylene used in this experiment is supplied directly by a rubber factory and distilled again before the experiment.