“…Miyazaki et al (1985) found MC5 to be 2.3 % of the technical mixture, MC6 to be 0.8 % and MC7 to be 1.9 %. Additionally, unreacted chlordene is a minor component of technical chlordane, but caged hexachloro compounds resulting from Wagner-Meerwein rearrangement of chlordene exist, often named α-, β-, and γ-chlordene, compounds that have been detected in environmental samples (Dearth and Hites, 1991a;Simpson et al, 1996). Hence these data clearly show that the composition of technical chlordane may vary considerably.…”