Title: Bromophos
CAS Registry Number: 2104-96-3
CAS Name: Phosphorothioic acid O-(4-bromo-2,5-dichlorophenyl) O,O-dimethyl ester
Additional Names: O-(4-bromo-2,5-dichlorophenyl)-O,O-dimethylphosphorothioate; bromophos-methyl
Manufacturers' Codes: ENT-27162; OMS-658; S-1942
Trademarks: Nexion (Boehringer, Ing.)
Molecular Formula: C8H8BrCl2O3PS
Molecular Weight: 366.00
Percent Composition: C 26.25%, H 2.20%, Br 21.83%, Cl 19.37%, O 13.11%, P 8.46%, S 8.76%
Literature References: Prepn: BE 625198 C.A. 60, 13187a (1964); R. Sehring, K. Zeile, US 3227610, US 3275718 (1963, 1966, 1966 all to Boehringer, Ing.). Metabolism in rats: M. Stiasni et al., J. Agric. Food Chem. 15, 474 (1967). Toxicity study: T. B. Gaines, Toxicol. Appl. Pharmacol. 14, 515 (1969). Review: D. Eichler, Residue Rev. 41, 65-112 (1972).
Properties: Yellow crystals, mp 53-54°. bp0.01 140-142°. Vapor pressure at 20°C: 1.3 ´ 10-4 mm Hg. Soly in water at 25°: 40 mg/l. Sol in CCl4, ether, toluene. Stable in soln up to pH 9. Non-corrosive. LD50 in male, female rats (mg/kg): 1600, 1730 orally (Gaines).
Melting point: mp 53-54°
Boiling point: bp0.01 140-142°
Toxicity data: LD50 in male, female rats (mg/kg): 1600, 1730 orally (Gaines)
Derivative Type: O,O-Diethyl analog
Additional Names: Bromophos-ethyl
Manufacturers' Codes: ENT-27258; OMS-659; S-2225
Trademarks: Nexagan (Boehringer, Ing.)
Molecular Formula: C10H12BrCl2O3PS
Molecular Weight: 394.05
Percent Composition: C 30.48%, H 3.07%, Br 20.28%, Cl 17.99%, O 12.18%, P 7.86%, S 8.14%
Properties: Colorless to pale yellow oil, bp0.001 122-133°. Vapor pressure at 30°: 4.6 ´ 10-5 mm Hg. Soly in water at 25°: 2 mg/l.
Boiling point: bp0.001 122-133°
Use: Insecticide, acaricide. |