CHLORIMURON-ETHYL

Name: Chlorimuron-ethyl

Chemical name:IUPAC: ethyl 2-(4-chloro-6-methoxypyrimidin-2-ylcarbamoylsulfamoyl)benzoate

CAS: ethyl 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoate

CAS No: 90982-32-4

Empirical formula: C₁₅H₁₅ClN₄O₆S

Molecular weight: 414.83

Structural formula:

Activity: pyrimidinylsulfonylurea herbicide

Physical state: pale yellow to off-white crystalline powder.

Odor: odorless.

Melting point: 181℃.

Solubility in organic solvents, 25℃, g/100ml: acetone-7.05; acetonitrile-3.10; benzene-0.815; ethyl acetate-2.36; ethyl alcohol-0.392; n-hexane-0.006; toluene-0.740; methylene chloride-15.3; xylene-0.283.

Solubility in water: 11mg/L (ph=5); 1.2g/L (ph=7);

Vapor pressure: 0.49×10^-9Pa.

Partition coefficient: 320 (Ph=5), 2.3(Ph=7).

Hydrolysis: half-life: 17-25 days in water, 25℃, ph=7.

Application: chlorimuron-ethyl is a sulfonylurea herbicide that inhibits acetolactate synthesis, which regulates plant growth, it acts by inhibiting biosynthesis of the essential amino acid valine and isoleucine, hence stopping cell division and plant growth. It can be used post-emergence for control of important broad-leaved weeds, such as cockleburr, pigweed, sunflower and anual morning glory, in soyabeans and peanuts.