Chlorendic Anhydride

Title: Chlorendic Anhydride
CAS Registry Number: 115-27-5
CAS Name: 4,5,6,7,8,8-Hexachloro-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione
Additional Names: 1,4,5,6,7,7-hexachloro-endo-5-norbornene-2,3-dicarboxylic anhydride; hexachloroendomethylenetetrahydrophthalic anhydride; 1,4,5,6,7,7-hexachloro-endo-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride
Molecular Formula: C9H2Cl6O3
Molecular Weight: 370.83
Percent Composition: C 29.15%, H 0.54%, Cl 57.36%, O 12.94%
Literature References: Prepd from hexachlorocyclopentadiene and maleic anhydride: Herzfeld et al., US 2606910 (1952 to Velsicol); Baranauckas et al., US 2903463 (1959 to Hooker Chem.). Purification: Zimmer et al., DE 1113451 (1961 to Hooker Chem.), C.A. 57, 697a (1962).
Properties: Crystals, mp 231-235°.
Melting point: mp 231-235°
Use: In prepn of polyester resins.
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