Detail of "2274-67-1"

CAS Number:
2274-67-1
Name:
Dimethylvinphos
Molecular Structure:
Formula:
C₁₀H₁₀Cl₃O₄P
Molecular Weight:
331.5168
Synonyms:
Phosphoricacid, 2-chloro-1-(2,4-dichlorophenyl)vinyl dimethyl ester (7CI,8CI);Benzylalcohol, 2,4-dichloro-a-(chloromethylene)-, dimethyl phosphate (8CI);2-Chloro-1-(2,4-dichlorophenyl)vinyl dimethyl phosphate;Dimethyl-1-(2,4-dichlorophenyl)-2-chlorovinylphosphate;Dimethylvinfos;IPO 10;O,O-Dimethyl O-2-chloro-1-(2',4'-dichlorophenyl)-vinylphosphate;OMS 712;Rangado;SD 8280;Shell SD 8280;
Density:
1.448 g/cm³
Boiling Point:
368.6 °C at 760 mmHg
Flash Point:
262.8 °C
Appearance:
Pale white crystalline solid

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Movement of pesticides in watercourse: Movement of pesticides in watercourse. 1. Effluence of pesticides to watercourse and drift at cooperative control in paddy fields. Mikuriya, Hatsuko; Miyahara, Kazuo (Saga Agric. Exp. Stn., Saga 840-23, Japan). Kyushu Byogaichu Kenkyukaiho, 30, 91-5 (Japanese) 1984. CODEN: KBKKDW. ISSN: 0385-6410. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 59, 61 Dispersion patterns of pesticide powder prepns. applied by a portable duster were studied on paddy water, drainage water, and irrigation channel for paddy field. The pesticides were isoxathion [18854-01-8], MTMC [1129-41-5], dimethylvinfos [2274-67-1], BPMC [3766-81-2], and tricyclazole [41814-78-2]. The powder dispersed >200 m horizontally and >8 m vertically. Av. half-life of the pesticides was 0.6-6.3 days in paddy water, 1.5-4.1 days in drainage water, and 4.3-27 days in irrigation channel water.

Metabolic demethylation of the insecticide dimethyl-vinphos in rats, in dogs, and in vitro: Metabolic demethylation of the insecticide dimethyl-vinphos in rats, in dogs, and in vitro. Crawford, Maureen J.; Hutson, D. H.; King, Pauline A. (Sittingbourne Res. Cent., Shell Res. Ltd., Sittingbourne, Engl.). Xenobiotica, 6(12), 745-62 (English) 1976. CODEN: XENOBH. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Following oral administration of 0.606 and 4.05 mg dimethylvinphos (I) [2274-67-1] to rats and dogs resp., I was metabolized via demethylation to desmethyl dimethylvinphos [60244-89-5] and then hydrolyzed to 2,4-dichlorophenacyl chloride (II) [4252-78-2] which was further metabolized to 2,4-dichloromandelic acid [7554-78-1], 1-(2,4-dichlorophenyl)ethanol [1475-13-4], and 2,4-dichlorophenylethanediol [14866-28-5], the latter 2 being conjugated with glucuronides. II was metabolized to 2,4-dichloroacetophenone [2234-16-4] by isolated rat liver microsomes and cytosol. In isolated liver fractions, I was demethylated by glutathione S-methyl transferase in the cytosol and microsomal monooxygenase. 4252-78-2 and 50812-37-8 are just another two chemicals used in this study. Phenobarbital pretreatment increased transferase activity 2-fold, and induced microsomal demethylation 45-fold, which resulted in a >13-fold protective effect against the acute toxic effects of I. .