Unlike existing alternatives — such as ammonia or methyl chloride— CFCs were non-flammable and non-toxic — meaning they wouldn't burst into flames or cause deadly gas leaks.
与现有的替代品（如氨或氯甲烷）不同，CFC 不易燃、无毒，这意味着它们不会起火或导致致命的气体泄漏。
Methyl Chloride
原声例句
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中文百科
氯甲烷 Chloromethane
（重定向自Methyl Chloride）
一氯甲烷又称甲基氯，无色、可燃、有毒气体，属有机卤化物。分子式是CH3Cl，分子量是50.49。
- 沸点：-24 °C（760mmHg）
- 液体比重（D2O）：0.95
- 溶解度：（水中，25 °C）：0.95
- 爆炸极限（空气中V﹪）：8.1-17.2
- 最高允许浓度：5 mg/m
英语百科
Chloromethane 氯甲烷
（重定向自Methyl Chloride）
Chloromethane, also called methyl chloride, Refrigerant-40, R-40 or HCC 40, is a chemical compound of the group of organic compounds called haloalkanes. It was once widely used as a refrigerant. It is a colorless extremely flammable gas with a mildly sweet odor, which is, however, detected at possibly toxic levels. Due to concerns about its toxicity, it is no longer present in consumer products. Chloromethane was first synthesized by the French chemists Jean-Baptiste Dumas and Eugene Peligot in 1835 by boiling a mixture of methanol, sulfuric acid, and sodium chloride. This method is similar to that used today.
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