Tetrachlorvinphos

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Tetrachlorvinphos

中文通用名

杀虫威

IUPAC

(Z)-2-chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl phosphate

CAS

(1Z)-2-chloro-1-(2,4,5-trichlorophenyl)ethenyl dimethyl phosphate

CAS No.

22248-79-9

Molecular Formula

C₁₀H₉Cl₄O₄P

Molecular Structure

General Product Information

Category

Insecticides > Organophosphorus insecticides
Acaricides / Miticides > Organophosphorus acaricides

Activity

Insecticide, acaricide

Physical & Safety Data

Physical Properties

Molecular weight:366.0; Physical form:Tech. is an off-white, crystalline solid. Composition:Tech. grade is typically 98% pure. Melting point:94-97 °C; Vapour pressure:0.0056 mPa (20 °C); Henry constant:1.86 × 10-4 Pa m3 mol-1 ( calc.); Solubility:In water 11 mg/l (20 °C). In acetone <200, chloroform, dichloromethane 400, xylene <150 (all in g/kg, 20 °C).; Stability:Stable <100 °C; slowly hydrolysed (50 °C), DT50 54 d ( pH 3), 44 d ( pH 7), 80 h ( pH 10.5).;

Toxicology

Oral:Acute oral LD₅₀ for rats 4000-5000, mice 2500-5000 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for rabbits >2500 mg/kg. Phytotoxicity:Russetting may occur on Golden Delicious apples under certain conditions. ADI:0.027 mg/kg b.w.

Environmental Profile

Ecotoxicology:
Bees:Toxic to bees.Birds:Acute oral LD₅₀ for Chukar partridges and mallard ducks >2000 mg/kg, for various other birds 1500-2600 mg/kg.Fish:LC₅₀ (24 h) for five different species 0.3-6.0 mg/l.

Environmental fate:
Animals:In mammals, rapid metabolism occurs, with elimination of the metabolites within a few days. Metabolites found in the urine of dogs and rats include 2,4,5-trichlorophenylethanediol glucuronide, further glucuronic acid derivatives, 2,4,5-trichloromandelic aSoil:For a review on metabolism and breakdown in plants, animals and soil, see K. I. Beynon et al., Residue Rev., 1973, 47, 55.

Transport Information

Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)