Sulfometuron-Methyl herbicide

Herbicide:Sulfometuron-Methyl contains 96%TC,75%WP,75%WG It can be sent by air easily.

PHYSICAL CHEMISTRY Composition Tech. is >93%. 

Mol. wt. 364.4  M.f. C15H16N4O5S 

Form Colourless solid (tech.). 

M.p. 203-205 ºC 

V.p. 7.3 × 10-11 mPa (25 ºC) 

KOW logP = 1.18 (pH 5), -0.51 (pH 7) 

Henry 1.2 × 10-13 Pa m3 mol-1 (25 °C) 

S.g./density 1.48 

Solubility In water 244 mg/l (pH 7, 25 ºC). In acetone 3300, acetonitrile 1800, ethyl acetate 650, diethyl ether 60, hexane <1, methanol 550, methylene chloride 15 000, dimethyl sulfoxide 32 000, octanol 140, toluene 240 (all in mg/kg, 25 ºC). 

Stability Aqueous suspensions are stable to hydrolysis at pH 7 to pH 9, DT50 c. 18 d (pH 5). 

pKa 5.2 

APPLICATIONS Biochemistry Branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts by inhibiting biosynthesis of the essential amino acids valine and isoleucine, hence stopping cell division and plant growth. 

Mode of action Broad-spectrum herbicide, absorbed rapidly by the leaves and roots, with translocation throughout the plant. 

Uses Control of annual and perennial grasses (especially Sorghum halepense) and broad-leaved weeds in non-crop land. Also used for selective weed control in Bermuda grass and certain other turf grasses; and in forestry to control woody tree species in pine trees. Applied either pre- or post-emergence. 

Phytotoxicity Not to be applied near desirable trees and plants. 

 

Sulfometuron-Methyl herbicide