Synonyms: (2,5-Dichloro-2,5-cyclohexadiene-1,4-diylidene)biscyanamide;1,4-Bis(cyanoimino)-2,5-dichloro-2,5-cyclohexadiene;2,5-Dichloro-2,5-cyclohexadiene-1,4-diylidenedicyanamide;2,5-Dichloro-N,N'-dicyano-1,4-benzoquinone diimine;N,N'-Dicyano-2,5-dichloro-1,4-benzoquinone diimine;N,N'-Dicyano-2,5-dichloro-2,5-cyclohexadiene-1,4-diimine