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Chemicals: Heptachlor Disclaimer Heptachlor Name: Heptachlor Synonym(s): 1,4,5,6,7,8,8-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindene Formula: C10H5Cl7 CAS Number: 76-44-8 Formula Weight: 373.4 Vapor Pressure: 0.0003 mm Hg at 77°F Boiling Point: Decomposes Freezing Point: 203°F Solubility: 0.0006% Ionization Potential: ? Specific Gravity: 1.66 Notes: White to light tan crystals with a camphor-like odor. Insecticide. Noncombustible, but may be dissolved in flammable liquids. Excerpted from NIOSH Pocket Guide to Chemical Hazards, US GPO 1997 J551-571