Chemical Identification
Common Name
4-methylthio-3,5-xylyl methylcarbamate
3,5-dimethyl-4-(methylthio)phenyl methylcarbamate
Molecular Formula
Molecular Structure
Physical Properties
Molecular weight:225.3; Physical form:Colourless crystals, with a phenol-like odour. Density:1.236 (20 °C); Melting point:119 °C; Vapour pressure:0.015 mPa (20 °C); 0.036 mPa (25 °C); Henry constant:1.2 × 10-4 Pa m3 mol-1 (20 °C); Partition coefficient(n-octanol and water):logP = 3.08 (20 °C); Solubility:In water 27 mg/l (20 °C). In dichloromethane >200, isopropanol 53, toluene 33, hexane 1.3 (all in g/l, 20 °C).; Stability:Unstable in highly alkaline media. Hydrolysis DT50 (22 °C) >1 y ( pH 4), <35 d ( pH 7), 6 h ( pH 9). Soluble in 2-propanol, toluene. Hardly soluble in n-hexane.
Oral:Acute oral LD50 for male and female rats c. 20, mice 52-58, guinea pigs c. 40, dogs 25 mg/ kg. Percutaneous:Acute percutaneous LD50 for male and female rats >5000 mg/kg. Non-irritating to skin and eyes (rabbits). Inhalation: LC50 (4 h) for rats >0.3 mg/l air (aerosol); c. 0.5 mg/l (dust). Phytotoxicity:May lead to fruit thinning on apple trees, if applied earlier than four weeks after petal fall. ADI:0.001 mg/ kg b.w. [1997].
Environmental Profile
 Algae: ErC50 for Scenedesmus subspicatus 1.15 mg/l.Bees:Not toxic to bees (depending on mode of application).Birds:Acute oral LD50 for male mallard ducks 7.1-9.4, Japanese quail 5-10 mg/kg. LC50 (7 d) for bobwhite quail: no signs of toxicity as birds were repelled by 'Mesurol'.Daphnia: LC50 (48 h) 0.019 mg/l.Fish: LC50 (96 h) for bluegill sunfish 0.754, rainbow trout 0.436-4.7, golden orfe 3.8 mg/l.Worms: LC50 for Eisenia foetida >200 mg/ kg dry soil. 

Environmental fate: 
Animals:In dogs and mice, following oral administration, methiocarb is rapidly absorbed and excreted, principally in the urine, with only a small proportion in the faeces. Metabolism involves hydrolysis, oxidation, and hydroxylation, followed by excretion in freeSoil:Degradation in soil is rapid. The important metabolites are methylsulfinylphenol and methylsulfonylphenol.Plant:In plants, the methylthio group is oxidised to sulfoxide and sulfone, with hydrolysis to the corresponding thiophenol, methylsulfoxide-phenol, and methylsulfonyl-phenol (M. C. Bowman & M. Beroza, J. Assoc. Off. Anal. Chem., 1969, 52
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

Porduct NewsMore

EU proposes not to renew approval of methiocarb


Test slug control options in spuds after methiocarb ban

Methiocarb Metaldehyde

Related CompaniesMore

Jiangsu Changlong Agrochemical Co., Ltd.

Country:  China

Acetochlor Butachlor Buprofezin Dimethomorph Tebuthiuron Diafenthiuron Methomyl Thiodicarb Imidacloprid Bifenthrin

Hunan Gofar Fine Chemical TECH Co., Ltd.

Country:  China


Country:  Serbia