. . . "1,2-dicloroetilene — Codice CAS: 540-59-0"@it . "1,2-dichloroethylene"@en . "CAS:540-59-0" . . "1,2-dichloroethylene — CAS Identifier: 540-59-0"@en . "1,2-dicloroetilene"@it . .