5127. Isobenzan

Nomenclature

CAS number: 297-78-9
1,3,4,5,6,7,8,8-Octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran; 1,3,4,5,6,7,10,10-octachloro-4,7-endomethylene-4,7,8,9-tetrahydrophthalan; SD-4402; R-6700; Omtan; Telodrin.
C9H4Cl8O; mol wt 411.75.
C 26.25%, H 0.98%, Cl 68.88%, O 3.89%.

Description and references

Prepn: GB 772212 (1957 to Ruhrchemie); Korte, Stiasni, Ann. 656, 140 (1962); Feichtinger, Linden, Chem. Ind. (London) 1965, 1938. Toxicity study: Tauberger, Arch. Exp. Pathol. Pharmakol. 232, 227 (1957).

Chemical structure

Properties

Crystals from heptane, mp 120-122°. Sol in acetone, benzene, toluene, ether, xylene, heavy aromatic naphtha. LD50 i.v. in rats: 1.8 mg/kg (Tauberger).

Use

Insecticide.