English 
搜索
Chemical Identification
Common Name
Temephos
中文通用名
双硫磷
IUPAC
O,O,O′,O′-tetramethyl O,O′-thiodi-p-phenylene bis(phosphorothioate)
or
O,O,O′,O′-tetramethyl O,O′-thiodi-p-phenylene diphosphorothioate
CAS
O,O′-(thiodi-4,1-phenylene) bis(O,O-dimethyl phosphorothioate)
CAS No.
3383-96-8
Molecular Formula
C16H20O6P2S3
Molecular Structure
Physical Properties
Molecular weight:466.5; Physical form:Colourless crystals; ( tech., brown, viscous liquid). Density:1.32 (tech.); Composition:Tech. grade is >90% pure. Melting point:30.0-30.5 °C; Partition coefficient(n-octanol and water):logP = 4.91; Solubility:In water 0.03 mg/l (25 °C). Soluble in common organic solvents such as diethyl ether, aromatic and chlorinated hydrocarbons. In hexane 9.6 g/l.; Stability:Hydrolysed by strong acids and alkalis (optimum stability is at pH 5-7). Do not store at temperatures above 49 °C.;
Toxicology
Oral:Acute oral LD50 for male rats 4204, female rats >10 000 mg/kg. Percutaneous:Acute percutaneous LD50 (24 h) for rabbits 2181, rats >4000 mg/kg. Non-irritating to eyes and skin. ADI:0.005 mg/kg.
Environmental Profile
Ecotoxicology: 
Bees:Highly toxic by direct contact; LD50 (topical) 1.55 µg/bee.Birds:Dietary LC50 (5 d) for mallard ducks 1200, ring-necked pheasants 170 mg/kg diet.Fish: LC50 for rainbow trout 31.8 mg/l. 

Environmental fate: 
Animals:In mammals, elimination is mainly of unchanged temephos in the faeces and urine. Other principal urinary metabolites are sulfate ester conjugates of 4,4'-thiodiphenol, 4,4'-sulfinyldiphenol, and 4,4'-sulfonyldiphenol (R. C. Blinn, J. Agric. Food Chem.Soil:Soil adsorption Freundlich K 73 (loamy sand), 130 (sandy loam), 244 (silt loam), 541 (loam).Plant:In plants, oxidation to the sulfoxide, and, to a lesser extent, to the sulfone and the mono- and di-orthophosphates. Further degradation proceeds very slowly.
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

Porduct NewsMore

Colombia’s Constitutional Court bans chlorpyrifos

Chlorpyrifos

ADAMA Canada moves forward with lambda-cyhalothrin sales for 2023

Lambda-cyhalothrin

Copper formulations' market still underestimated: Chinese self-developed Thiazoles is tapping potential of global market

Copper fungicides

Mexico: Import of glyphosate drops from 16,500 tons to 8,200 tons

Glyphosate

Glyphosate to gain temporarily one year approval in EU without support of qualified majority of Member States

Glyphosate

Glyphosate prices drop 30% in Argentina

Glyphosate

One year extension of EU glyphosate approval failed to pass in the latest meeting

Glyphosate

Palmer amaranth in two southern U.S. states now resistant to S-metolachlor

S-metolachlor

FMC introduces Altacor EVO insect control, new management solution for lepidopteran pests

Chlorantraniliprole

Paraquat prices rise, pyridine base industry analysis

Paraquat

Related CompaniesMore

Aimco Pesticides Limited

Country:  India

Permethrin Imidacloprid Cypermethrin Chlorpyrifos Alpha-cypermethrin Triclopyr Deltamethrin Fluroxypyr Quinalphos Temephos

Coromandel International Limited

Country:  India

Mancozeb Propineb Azoxystrobin Maneb Acephate Profenofos Phenthoate Malathion Pyrazosulfuron-ethyl Glyphosate

Gharda Chemicals Limited

Country:  India

Alpha-cypermethrin Cypermethrin Deltamethrin Permethrin Chlorpyrifos Indoxacarb Fipronil Diflubenzuron Diuron Triclopyr

Crop Chemicals India Ltd.(CCIL)

Country:  India

Acetamiprid Carbendazim Chlorpyrifos Cypermethrin Deltamethrin Dimethoate Fenvalerate Lambda-cyhalothrin Profenofos Temephos

Vanguard Kemagro Pvt.Ltd.

Country:  India