二氟一氯甲烷(F_22)经高温裂解制备四氟乙烯(氟塑料单体)时有许多付反应物存在于“残液”中。故残液的组分极为复杂,毒性亦较大。国外少数报导提到反复吸入聚四氟乙烯烟雾可引起肺间质纤维化,六氟二氯丁烯可引起肺水肿和肺间质纤维化,使肺“肝样化”,从而导致急性呼吸衰竭死亡,存活者残畄肺纤维化。人一次吸入F_22残液中气相部分可引起严重的急性肺损 Difluorochloromethane (F_22) There are many reactants present in the “raffinate” when making tetrafluoroethylene (fluoroplastic monomer) by pyrolysis. Therefore, the composition of the residue is extremely complex and toxic. A small number of foreign reports mention that repeated inhalation of Teflon aerosol can cause interstitial fibrosis, which can cause pulmonary edema and interstitial lung fibrosis, resulting in “liver-like” lungs, leading to acute respiratory failure Death, survivors residual lung fibrosis. A person inhaled F_22 residue in the gas phase can cause severe acute lung injury