氯乙烯(CH_2=CHCl)是制造聚氯乙烯塑料的单体,是以乙炔(CH_2=CH_2)和氯化氢(HCl)为原料,用氯化汞(HgCI)作催化剂而合成。在常温常压下为无色气体,12～14℃时则冷凝为液体,略呈芳香味。车间最高容许浓度为30毫克/立方米。属低毒类,但加进偶氮二异丁腈引发剂又未聚合完成时则毒性增强。6例临床表现均以神经和消化系统症状为主,职业史清楚,毒原明确,临床症状支持氯 Vinyl chloride (CH_2 = CHCl) is a kind of monomer used in the manufacture of PVC. It is synthesized from acetylene (CH_2 = CH_2) and hydrogen chloride (HCl) using HgCI as catalyst. Colorless gas at room temperature and pressure, 12 ~ 14 ℃, then condensed into a liquid, slightly aromatic. Workshop maximum allowable concentration of 30 mg / cubic meter. Is a low toxicity, but with azobisisobutyronitrile initiator and polymerization is complete, then the toxicity increased. 6 cases of clinical manifestations are mainly neurological and digestive system symptoms, clear occupation history, clear virulent, clinical symptoms support chlorine