3043. Dichlofenthion

Nomenclature

CAS number: 97-17-6
Phosphorothioic acid O-(2,4-dichlorophenyl) O,O-diethyl ester; O-2,4-dichlorophenyl O,O-diethyl phosphorothioate; O,O-diethyl O-2,4-dichlorophenyl phosphorothioate; VC-13 Nemacide.
C10H13Cl2O3PS; mol wt 315.15.
C 38.11%, H 4.16%, Cl 22.50%, O 15.23%, P 9.83%, S 10.17%.

Description and references

Organophosphate insecticide; cholinesterase inhibitor. Prepd from O,O-diethyl phosphorochloridothioate, 2,4-dichlorophenol and NaOH: Smithey, Jr., US 3004054 (1960 to Virginia-Carolina Chemical). Toxicity data: T. B. Gaines, R. E. Linder, Fundam. Appl. Toxicol. 7, 299 (1986) DOI PubMed. GC-MS determn in water: D. A. Lambropoulou et al., Anal. Chim. Acta 516, 205 (2004) DOI.

Chemical structure

Properties

Liquid, bp0.1 164-169°. nD25 1.5291. d20 1.300. Slightly sol in water; miscible with most organic solvents. LD50 in male, female rats (mg/kg): 185, 172 orally; 576, 355 dermally (Gaines, Linder).

Use

Nematocide; insecticide.