English 
搜索
Chemical Identification
Common Name
Metolachlor
中文通用名
异丙甲草胺
IUPAC
2-chloro-N-(6-ethyl-o-tolyl)-N-[(1RS)-2-methoxy-1-methylethyl]acetamide
or
(aRS,1RS)-2-chloro-6′-ethyl-N-(2-methoxy-1-methylethyl)acet-o-toluidide
CAS
2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide
CAS No.
51218-45-2
Molecular Formula
C15H22ClNO2
Molecular Structure
Category
Activity
Herbicide
Premix
Bensulfuron-methyl+metolachlor
Atrazine+S-metolachlor
Sulfentrazone+S-metolachlor
Atrazine+mesotrione+S-metolachlor
Metolachlor+metribuzin
Metolachlor+fomesafen
Metolachlor+Atrazine
Atrazine Bicyclopyrone Mesotrione S-metolachlor
Oxyfluorfen+S-metolachlor
Nicosulfuron+S-metolachlor+Atrazine
S-metolachlor+Terbuthylazine
Metolachlor+Terbutryn
Pendimethalin+Metolachlor
Metribuzin+Metolachlor+2,4-D-ethylhexyl
Emulsifiable concentrate, granules. 
Premix Parters: flufenacet;
Physical Properties
Molecular weight:283.8; Physical form:Colourless to light tan liquid. Density:1.12 (20 °C); Composition:Racemic mixture of (1S)- and (1R)- isomers. Melting point:-62.1 °C; Flash point:190 °C (1013 mbar); Vapour pressure:4.2 mPa (25 °C) (OECD 104); Henry constant:2.4 ×10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 2.9 (25 °C); Solubility:In water 488 mg/l (25 °C) ( OECD 105). Miscible with benzene, toluene, ethanol, acetone, xylene, hexane, dimethylformamide, ethylene dichloride, cyclohexanone, methanol, octanol, and dichloromethane. Insoluble in ethylene ; Stability:Stable up to c. 275 °C. Hydrolysed by strong alkalis and strong mineral acids. On hydrolysis in buffer (20 °C), DT50 ( calc.) >200 d (pH >10).;
Toxicology
Oral:Acute oral LD50 for rats 2780 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >3170 mg/kg. Mild skin and eye irritant (rabbits). May cause skin sensitisation (guinea pigs). Inhalation: LC50 (4 h) for rats >1.75 mg/l air. Phytotoxicity:Well tolerated by most broad-leaved crops, maize, sorghum (safened with fluxofenim or oxabetrinil). ADI:0.008 mg/ kg b.w.
Environmental Profile
Ecotoxicology: 
Algae:EC50 for Scenedesmus subspicatus 0.1 mg/l.Bees: LD50 (oral and contact) >110 mg/bee.Birds:Acute oral LD50 for mallard ducks and bobwhite quail >2150 mg/kg. Dietary LC50 (8 d) for bobwhite quail and mallard ducks >10 000 mg/ kg.Daphnia:LC50 (48 h) 25 mg/l.Fish:LC50 (96 h) for rainbow trout 3.9, carp 4.9, bluegill sunfish 10 mg/l.Worms:LC50 (14 d) for earthworms 140 mg/ kg soil. 

Environmental fate: 
Animals:Rapidly oxidised by rat liver microsomal oxygenases via dechlorination, O-demethylation and side-chain oxidation (J. Agric. Food Chem., 1989, 37, 1088).Soil:Major aerobic metabolites are derivatives of oxanilic and sulfonic acids. DT50 in soil c. 20 d (field). Koc 121-309.Plant:In plants, metabolism involves natural product conjugation of the chloroacetyl group, and hydrolysis and sugar conjugation at the ether group. Final metabolites are polar, water-soluble, and non-volatile.
Transport Information
Hazard Class:III(Slightly hazardous)

Porduct NewsMore

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

EU withdraws the approval of SDHI fungicide isopyrazam

Isopyrazam

ADAMA launches Timeline® FX, to deliver superior control and flexibility over broadleaf weeds

Pinoxaden Florasulam Fluroxypyr

Bayer's Rejuvra herbicide registered for use in California

Indaziflam

Related CompaniesMore

Hangzhou Qingfeng Imp.& Exp. Co.,Ltd.

Country:  China

S-metolachlor Fomesafen Flumioxazin Clethodim Imazapyr Tebuthiuron Azoxystrobin Tebuconazole Oxyfluorfen Metolachlor

SHANDONG KESAI EAGROW CO., LTD.

Country:  China

Pyrazosulfuron-ethyl+pretilachlor Pyribenzoxim+cyhalofop-butyl Mesotrione+Atrazine+Nicosulfuron Imidacloprid Clothianidin+Pyraclostrobin Rimsulfuron+Haloxyfop-p-Methyl Ametryn+Halosulfuron-Methyl Flumioxazin+Glufosinate-Ammonium Prometryn+Acetochlor Atrazine+Topramezone

Jiangsu Yongan Chemical Co., Ltd.

Country:  China

Pendimethalin Methoxyfenozide 2,4-D Clethodim Quinclorac Glufosinate-ammonium Metolachlor Atrazine Pendimethalin

Nutrichem Company Limited

Country:  China

Oxyfluorfen Tebuconazole Metolachlor Azoxystrobin Clopyralid Triclopyr Tebuthiuron Acifluorfen Clethodim Imazapyr Picloram Pretilachlor Bifenthrin Amitraz Mesotrione

Shenzhen Baocheng Chemical Industry CO.,LTD.

Country:  China

Glyphosate Nicosulfuron Bispyribac-sodium Emamectin benzoate Lambda-cyhalothrin Pyraclostrobin 2,4-D Bromacil Glufosinate-ammonium Prothioconazole