Fenothiocarb

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Fenothiocarb

中文通用名

苯硫威

IUPAC

S-4-phenoxybutyl dimethyl(thiocarbamate)

CAS

S-(4-phenoxybutyl) dimethylcarbamothioate

CAS No.

62850-32-2

Molecular Formula

C₁₃H₁₉NO₂S

Molecular Structure

General Product Information

Category

Acaricides / Miticides > Thiocarbamate acaricides

Activity

Acaricide/Miticide

Physical & Safety Data

Physical Properties

Molecular weight:253.4; Physical form:Colourless crystals. Density:1.211 (20 °C); Composition:Tech. is >96%. Melting point:40-41 °C; Vapour pressure:0.166 mPa (23 °C); Partition coefficient(n-octanol and water):logP = 3.28 (20 °C); Solubility:In water 30 < mg/l (20 °C). In cyclohexanone 3800, acetonitrile 3120, acetone 2530, xylene 2464, methanol 1426, kerosene 80, hexane 66 (all in g/l, 20 °C).; Stability:Slowly decomposed by sunlight (>10 d). Stable to hydrolysis for 5 d ( pH 5-9, 40 °C). Stable to heat; <1% decomposition after 60 d at 55 °C.

Toxicology

Oral:Acute oral LD₅₀ for male rats 1150, female rats 1200, male mice 7000, female mice 4875 mg/ kg. Percutaneous:Acute percutaneous LD₅₀ for male rats 2425, female rats 2075, mice >8000 mg/ kg. Inhalation: LC₅₀ (4 h) for rats >1.79 mg/l. Phytotoxicity:Certain apple varieties, cotton, peaches, melons, legumes, brassicas and other crops may be injured at high rates of application.

Environmental Profile

Ecotoxicology:
Bees: LD₅₀ by topical application 0.2-0.4 mg/bee.Birds:Acute oral LD₅₀ for mallard ducks >2000, male bobwhite quail 1013, female bobwhite quail 878 mg/ kg.Daphnia: LC₅₀ (24 h) for D. carinata 6.7 mg/l.Fish: LC₅₀ (48 h) for carp 7.9 mg/l.

Environmental fate:
Animals:Following dosing to rats, >90% of radiolabel was excreted within 48 h in the urine and faeces. Six metabolites were identified.Soil:In the field, DT₅₀ 8 d (sandy loam soil), 15 d (sandy soil). K_oc 7380.Plant:Foliar applied fenothiocarb rapidly disappeared from leaves and fruit of mandarin oranges. Nine metabolites were identified.

Transport Information

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