9600. Triasulfuron

Nomenclature

CAS number: 82097-50-5
2-(2-Chloroethoxy)-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide; 1-[2-(2-chloroethoxy)phenylsulfonyl]-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea; CGA-131036; Amber (Syngenta); Logran (Syngenta).
C14H16ClN5O5S; mol wt 401.83.
C 41.85%, H 4.01%, Cl 8.82%, N 17.43%, O 19.91%, S 7.98%.

Description and references

Sulfonylurea herbicide for broadleaf weeds. Prepn: W. Meyer, W. Fry, EP 44808; eidem, US 4514212 (1982, 1985 both to Ciba-Geigy). Comprehensive description: J. Amrein, H. R. Gerber, Proc. Br. Crop Prot. Conf. - Weeds 1985, 55-62. Uptake and metabolism in wheat: A. M. Meyer, F. Müller, Brighton Crop Prot. Conf. - Weeds 1989, 441. Behavior in soil: F. K. Oppong, G. R. Sagar, Weed Res. 32, 157, 167 (1992). Immunoassay in soil: J. A. Schlaeppi et al., J. Agric. Food Chem. 42, 1914 (1994).

Chemical structure

Properties

White crystals, mp 186°. Vapor pressure (20°): 7.5 × 1013 mm Hg. Soly in water (20°): 1.5 g/l (pH 7). LD50 in rats (mg/kg): >5000 orally; >2000 dermally; LC50 (4 hr) in rats: >5185 mg/m3 by inhalation (Amrein, Gerber).

Use

Herbicide.