ethylan, 1,1-dichloro-2,2-bis(p-ethylphenyl)-ethane, 1,1’-(2,2-dichloroethylidene)bis[4-ethylbenzene], Di(p-ethylphenyl)dichloroethane, Caswell No. 337, p,p'-Ethyl DDD, 1,1-di-(p-ethylphenyl)-2,2-dichloroethane, Ethane,1,1-dichloro-2,2-bis(p-ethylphenyl), PERTHANE, 1,1-bis-(4-ethyl-phenyl)-2,2-dichloro-ethane, Perthan, 1,1-dichloro-2,2-bis(4-ethylphenyl)ethane, 1,1’-(2,2-dichloroethane-1,1-diyl)bis(4-ethylbenzene), 1-[2,2-dichloro-1-(4-ethylphenyl)ethyl]-4-ethylbenzene