(Z)-1,2-Dichloroethylene 1,2-cis-Dichloroethylene 1,cis-2-Dichloroethene 156-59-2 Acetylene dichloride, cis- Dichloroethylene, cis- Ethene, 1,2-dichloro-, (Z)- Ethylene, 1,2-dichloro-, (Z)- NSC6149 WLN: G1U1G-Z cis-1,2-Dichloroethene cis-1,2-Dichloroethylene cis-Di-1,2-Chloroethylene cis-Dichloroethylene cis-Dichloromethylene