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氯乙烯是目前使用广泛、产量较大的聚氯乙烯塑料的单体。分子式为CH_2=CHCl,分子量是62.5,熔点-160℃,沸点-13.9～14℃,在常温常压下为无色可燃性气体。其蒸气有氯仿样气味,在一定压力下变为液体。氯乙烯对空气的比重为2.15,与空气混合时爆炸极限为4～21%。氯乙烯微溶于水,易溶于有机溶剂。氯乙烯具有一定的毒性,下面根据国外资料,对此做一简要介绍。一、急性中毒多因生产事故而大量吸入高浓度的氯乙烯所致,常见于清釜工。人对氯乙烯的嗅阈浓度为300～4,000 ppm(1 ppm即百万分之一),引起
Vinyl chloride is currently widely used, large yield of PVC plastic monomer. Molecular formula CH_2 = CHCl, molecular weight is 62.5, melting point -160 ℃, boiling point -13.9 ~ 14 ℃, at room temperature and pressure for the colorless flammable gas. The vapor has a chloroform-like odor, under certain pressure into a liquid. The specific gravity of vinyl chloride to air is 2.15, when mixed with air, the explosion limit is 4 to 21%. Vinyl chloride slightly soluble in water, soluble in organic solvents. Vinyl chloride has some toxicity, the following based on foreign information, to make a brief introduction. First, acute poisoning and more due to production accidents caused by large concentrations of vinyl chloride inhalation, common in the kettle workers. Odor threshold levels for vinyl chloride are 300-4,000 ppm (1 ppm ie 1 ppm), causing