Glisson B T, Craft B F, Nelson J H, Meuzelaar H L
Am Ind Hyg Assoc J. 1986 Jul;47(7):427-35. doi: 10.1080/15298668691389991.
This study investigated the extent to which methyl chloroform undergoes thermal decomposition to form vinylidene chloride. The experiment was conducted under laboratory conditions that approximate those found in industrial environments. Methyl chloroform vapors at approximately the TLV concentration of 1910 mg/m3 were passed through a heated quartz tube packed with glass or copper beads. In the presence of glass, the decomposition reaction began at 350 degrees C and was essentially complete at 605 degrees C. Vinylidene chloride was detected in nearly stoichiometric amounts. In the presence of copper, the reaction occurred initially at 180 degrees C. At 442 degrees C no methyl chloroform was detected. Once again, the conversion to vinylidene chloride was nearly complete. Two major conclusions have been derived from this study. First, under these experimental conditions, methyl chloroform undergoes thermal decomposition to yield substantial quantities of vinylidene chloride. Second, the dehydrohalogenation reaction proceeds at much lower temperatures in the presence of copper.
本研究调查了甲基氯仿发生热分解生成偏二氯乙烯的程度。实验是在接近工业环境条件的实验室环境下进行的。将浓度约为阈限值（TLV）1910毫克/立方米的甲基氯仿蒸气通过填充有玻璃珠或铜珠的加热石英管。在有玻璃存在的情况下，分解反应在350摄氏度开始，在605摄氏度基本完成。检测到的偏二氯乙烯量接近化学计量。在有铜存在的情况下，反应最初在180摄氏度发生。在442摄氏度时未检测到甲基氯仿。偏二氯乙烯的转化再次几乎完全。本研究得出了两个主要结论。第一，在这些实验条件下，甲基氯仿发生热分解生成大量的偏二氯乙烯。第二，在有铜存在的情况下，脱卤化氢反应在低得多的温度下进行。
