Structural Formula Vector Image
Title: Chlorobenzilate
CAS Registry Number: 510-15-6
CAS Name: 4-Chloro-a-(4-chlorophenyl)-a-hydroxybenzeneacetic acid ethyl ester
Additional Names: 4,4¢-dichlorobenzilic acid ethyl ester; ethyl 4,4¢-dichlorobenzilate; ethyl 2-hydroxy-2,2-bis(4-chlorophenyl)acetate; chlorbenzilat
Manufacturers' Codes: G-23922; compd 338
Trademarks: Acaraben; Akar; Folbex
Molecular Formula: C16H14Cl2O3
Molecular Weight: 325.19
Percent Composition: C 59.10%, H 4.34%, Cl 21.80%, O 14.76%
Literature References: Prepn: Häfliger, US 2745780 (1956 to Geigy); GB 831421 (1960 to Metal & Thermit). Toxicity study: T. B. Gaines, Toxicol. Appl. Pharmacol. 14, 515 (1969). Review of carcinogenic risk: IARC Monographs 30, 73-85 (1983).
Properties: Viscous liquid. The commercial product is yellow. bp0.04 146-148°. nD20 1.5727. Vapor press. at 20°: 2.2 ´ 10-6 mm. Slightly sol in water. Sol in most organic solvents. Incompatible with lime. LD50 in male, female rats (mg/kg): 1040, 1220 orally (Gaines).
Boiling point: bp0.04 146-148°
Index of refraction: nD20 1.5727
Toxicity data: LD50 in male, female rats (mg/kg): 1040, 1220 orally (Gaines)
CAUTION: Symptoms similar to DDT: See Clinical Toxicology of Commercial Products, R. E. Gosselin et al., Eds. (Williams & Wilkins, Baltimore, 5th ed., 1984) Section II, p 283.
Use: Acaricide in spider-mite control; synergist for DDT.
Status: This monograph has been retired and is no longer subject to revision or update.

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