Tetrachlorvinphos
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Title: Tetrachlorvinphos
CAS Registry Number: 22248-79-9
CAS Name: Phosphoric acid (Z)-2-chloro-1-(2,4,5-trichlorophenyl)ethenyl dimethyl ester
Additional Names: 2,4,5-trichloro-a-(chloromethylene)benzyl phosphate ester; 2-chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl phosphate; stirofos
Manufacturers' Codes: ENT-25841; SD-8447
Trademarks: Gardona (Shell); Rabon (Shell); Rabond (Shell)
Molecular Formula: C10H9Cl4O4P
Molecular Weight: 365.96
Percent Composition: C 32.82%, H 2.48%, Cl 38.75%, O 17.49%, P 8.46%
Literature References: Organophosphate insecticide; cholinesterase inhibitor. Prepn: D. D. Phillips, L. F. Ward, Jr., US 3102842; D. E. Ramey, US 3553297 (1963, 1971 both to Shell). Properties: Whetstone et al., J. Agric. Food Chem. 14, 352 (1966). Soil persistence: N. P. Agnihotri et al., Indian J. Agric. Chem. 14, 27 (1981). Metabolism: M. H. Akhtar, T. S. Foster, J. Agric. Food Chem. 28, 698 (1980); eidem, ibid. 29, 766 (1981). Determn of residues in foods: V. Leoni et al., J. AOAC Int. 75, 511 (1992). Toxicology studies: T. B. Gaines, Toxicol. Appl. Pharmacol. 14, 515 (1969); A. I. T. Walker et al., Pestic. Sci. 3, 517 (1972). Review of agricultural use: A. G. Jennings, Int. Pest Control 12, 28-33 (1970); of carcinogenic risk: IARC Monographs 30, 197-206 (1983).
Properties: mp 97-98°. Vapor pressure at 20° = 4.2 ´ 10-8. Soly in water: 11 ppm; in xylene: <15%; 40-50% in chloroform at room temp. LD50 in male, female rats (mg/kg): 1100, 1125 orally (Gaines).
Melting point: mp 97-98°
Toxicity data: LD50 in male, female rats (mg/kg): 1100, 1125 orally (Gaines)
Use: Insecticide.
Therap-Cat-Vet: Insecticide.

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