14979-34-1 4,7-Methano-1H-indene, 1,1,2,3,3a,4,5,6,7,7a,8,8-dodecachloro-3a,4,7,7a-tetrahydro- 4,7-Methanoindene, 1,1,2,3,3a,4,5,6,7,7a,8,8-dodecachloro-3a,4,7,7a-tetrahydro- AI3-27056 DODECACHLORODICYCLOPENTADIENE HSDB 2792 Hexachlorocyclopentadiene cyclic dimer