Structural Formula Vector Image
Title: Crotoxyphos
CAS Registry Number: 7700-17-6
CAS Name: (E)-3-[(Dimethoxyphosphinyl)oxy]-2-butenoic acid 1-phenylethyl ester
Additional Names: 3-hydroxycrotonic acid a-methylbenzyl ester dimethyl phosphate; O,O-dimethyl O-[1-methyl-2-(1-phenylcarbethoxy)vinyl] phosphate; dimethyl 2-(a-methylbenzyloxycarbonyl)-1-methylvinyl phosphate
Manufacturers' Codes: ENT-24717; SD-4294
Trademarks: Ciodrin (Shell)
Molecular Formula: C14H19O6P
Molecular Weight: 314.27
Percent Composition: C 53.50%, H 6.09%, O 30.55%, P 9.86%
Literature References: Prepn: GB 855238 (1960 to Bataafse Petroleum Maatschappij N.V.); Whetstone, Stiles, US 2982686 (1961 to Shell). Activity: C. P. Weidenback, R. L. Younger, J. Econ. Entomol. 55, 793 (1962). Metabolism and degradn: K. I. Beynon et al., Residue Rev. 47, 55 (1973). Toxicity study: T. B. Gaines, Toxicol. Appl. Pharmacol. 14, 515 (1969).
Properties: Light straw-colored liq, bp0.03 135°. nD25 1.4988. d25 1.19. Vapor pressure at 20°: 1.4 ´ 10-5 mm Hg. Soly in water at room temp: 0.1%. Slightly sol in kerosine, saturated hydrocarbons. Sol in acetone, chloroform, ethanol, highly chlorinated hydrocarbons. LD50 in female, male rats (mg/kg): 74, 110 orally (Gaines).
Boiling point: bp0.03 135°
Index of refraction: nD25 1.4988
Density: d25 1.19
Toxicity data: LD50 in female, male rats (mg/kg): 74, 110 orally (Gaines)
CAUTION: A cholinesterase inhibitor.
Use: Insecticide for external use on livestock.

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