Synonyms: 1,1'-sulfonylbis(4-chlorobenzene); 4,4[-Dichlorodiphenyl sulphone; 4,4'-dichlorophenyl sulfone; 4-chloro-1-(4-chlorophenylsulfonyl)benzene; p-chlorophenyl sulfone; bis(p-chlorophenyl) sulfone; 4,4'-Dichloro Biphenyl Sulfone; 4,4'-dichlorodiphenyl sulfone; 4,4'-Dichloro Diphenyl Sulphone; 4,4'-Dichloro Diphenyl Sulfone