Synonyms: Ethene,1,2-dichloro-, (Z)-; Ethylene, 1,2-dichloro-, (Z)- (8CI);(Z)-1,2-Dichloroethene; (Z)-1,2-Dichloroethylene; 1,2-cis-Dichloroethene;1,2-cis-Dichloroethylene; HCC 1130c; R 1130c; cis-1,2-Dichlorethylene;cis-1,2-Dichloroethene; cis-1,2-Dichloroethylene; cis-Dichloroethene;cis-Dichloroethylene