Title: Dienochlor
CAS Registry Number: 2227-17-0
CAS Name: 1,1¢,2,2¢,3,3¢,4,4¢,5,5¢-Decachlorobi-2,4-cyclopentadien-1-yl
Additional Names: bis(pentachloro-2,4-cyclopentadien-1-yl); decachlor
Manufacturers' Codes: HRS-16
Trademarks: Pentac (Zoecon)
Molecular Formula: C10Cl10
Molecular Weight: 474.64
Percent Composition: C 25.30%, Cl 74.69%
Literature References: Acaricide to control mites on ornamental plants. Prepn from hexachlorocyclopentadiene, characterization: E. T. McBee et al., J. Am. Chem. Soc. 77, 4375 (1955). Prepn and rubber vulcanizing props: E. C. Ladd, US 2732409 (1956 to U.S. Rubber). Prepn and insecticidal props: J. T. Rucker, US 2934470 (1960 to Hooker). Effectiveness as miticide: W. W. Allen et al., J. Econ. Entomol. 57, 187 (1964). Crystal structure: G. Smith et al., J. Chem. Soc. Perkin Trans. 2 1976, 796. Photodegradation: G. B. Quistad, K. M. Mulholland, J. Agric. Food Chem. 31, 621 (1983). Effect on oogenesis of Mexican bean beetle: P. R. Hughes, M. A. Penton, J. Econ. Entomol. 76, 1156 (1983).
Properties: Yellow prisms from petr ether, mp 121.5-122°. uv max: 330 nm (e 2950). Stable to alkali.
Melting point: mp 121.5-122°
Absorption maximum: uv max: 330 nm (e 2950)
Use: Miticide.

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