六ろく塩えん化かエタンろくえんかエタンMeanings1nounhexachloroethane; perchloroethaneA chlorinated hydrocarbon used as a chemical intermediate, in pyrotechnics, and formerly as a veterinary anthelmintic. Technical term.六ろく塩えん化かエタンは、かつて家か畜ちくの寄き生せい虫ちゅう駆く除じょに使