- 1. 1,1-Dichloroethane (Ethylidene Chloride) CH₃ CHCI₂ 허용한계 200ppm(약 810mg/㎥)
- 2. 1,2-Dichloroethane(Ethylene Dichloride) CH₂CICH₂CI 허용한계 50ppm(dir 200mg/㎥)
- 3. 1,2-Dichloroethylene(Vinylidene Chloride) (시스이성체 60%, 트란스 이성체 40%) CHCI=CHCI 허용한계 200ppm(dir 790mg/㎥)



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