Chemical Identification
Common Name
Triazophos
中文通用名
三唑磷
IUPAC
O,O-diethyl O-1-phenyl-1H-1,2,4-triazol-3-yl phosphorothioate
CAS
O,O-diethyl O-(1-phenyl-1H-1,2,4-triazol-3-yl) phosphorothioate
CAS No.
24017-47-8
Molecular Formula
C12H16N3O3PS
Molecular Structure
Category
Activity
Acaricide/Miticide
Insecticide, acaricide, nematicide
Premix
Acetamiprid+triazophos
Imidacloprid+triazophos
Lambda-cyhalothrin+triazophos
Fenvalerate+triazophos
Deltamethrin+triazophos
Fenpropathrin+triazophos
Beta-cypermethrin+triazophos
Abamectin+Triazophos
Emulsifiable concentrate. Premix Parters: chlorimuron-ethyl; metsulfuron-methyl thifensulfuron-methyl; thifensulfuron-methyl;
Physical Properties
Molecular weight:313.3; Physical form:Light yellow to dark brown liquid, with a typical phosphate ester odour. Density:1.24 (20 °C); Composition:Tech. grade is ×92% pure. Melting point:0-5 °C; Flash point:Cannot be determined; exothermic decomposition above 140 °C; Vapour pressure:0.39 mPa (30 °C); 13 mPa (55 °C); Partition coefficient(n-octanol and water):logP = 3.34; Solubility:In water 39 mg/l ( pH 7, 20 °C). In acetone, dichloromethane, methanol, isopropanol, ethyl acetate and polyethyleneglycols >500, n-hexane 11.1 (all in g/l, 20 °C).; Stability:Stable to light. Hydrolysed by aqueous acids and alkalis.;
Toxicology
Oral:Acute oral LD50 for rats 57-59, dogs >320->500 mg/kg b.w. daily. Percutaneous:Acute dermal LD50 for rats >2000 mg/kg. No skin or eye irritation. Inhalation: LC50 (4 h) for rats 0.531 mg/l air.
Environmental Profile
Ecotoxicology: 
Algae: LC50(96 h) 1.15 mg/l.Bees:Toxic to honeybees.Birds:Acute oral LD50 for Japanese quail 4.2-27.1 mg/kg, depending on carrier and sex. LC50 (8 d) for mallard ducks 325 mg/50 (48 h) 0.003 mg/l.Fish: LC50 (96 h) for carp 5.6, golden orfe 7.5-18 mg/l. LC50 (21 d) for trout 0.01 mg/l.Worms:LC50 (14 d) for Eisenia foetida 187 mg/kg< dry artificial soil. 

Environmental fate: 
Animals:Mainly eliminated via urine (75-94% of applied radioactivity). Excretion DT50 <1 d.Soil:Soil: DT50 (aerobic, field) 6-12 d, DT90 39-114 d.DT50 (lab.) 7-46 d, DT90 109-181 d. Water: rapidly degraded in aquatic systems: DT50 (elimination froPlant:In cotton plants, 1-phenyl-3-hydroxy-1,2,4-triazole is found as a metabolite, and the occurrence of a desethyl derivative of triazophos is presumed (W. G. Thier et al., Fresenius' Z. Anal. Chem., 1973, 267, 181-1
Transport Information
Hazard Class:Ib(Highly hazardous)

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