Benfluralin

Title: Benfluralin
CAS Registry Number: 1861-40-1
CAS Name: N-Butyl-N-ethyl-2,6-dinitro-4-(trifluoromethyl)benzenamine
Additional Names: N-butyl-N-ethyl-a,a,a-trifluoro-2,6-dinitro-p-toluidine; N-butyl-N-ethyl-2,6-dinitro-4-trifluoromethylaniline; benefin; bethrodine
Manufacturers' Codes: EL-110
Trademarks: Balan (Dow AgroSci.); Balfin (Dow AgroSci.); Benefex (Makhteshim-Agan); Quilan (Dow AgroSci.)
Molecular Formula: C13H16F3N3O4
Molecular Weight: 335.28
Percent Composition: C 46.57%, H 4.81%, F 17.00%, N 12.53%, O 19.09%
Literature References: Selective pre-emergence herbicide. Prepn: Q. F. Soper, US 3257190 (1966 to Lilly). Activity: E. F. Alder et al., Proc. Northeast. Weed Control Conf. 15, 298 (1961). Environmental fate: T. Golab et al., J. Agric. Food Chem. 18, 838 (1970). Soil degradn: J. H. Miller et al., Weed Sci. 23, 211 (1975); R. L. Zimdahl, S. M. Gwynn, ibid. 25, 247 (1977). Toxicity study: E. I. Goldenthal, Toxicol. Appl. Pharmacol. 18, 185 (1971).
Properties: Yellow-orange crystalline solid, mp 65-66.5°. Vapor pressure at 30°: 3.89´10-4 mm Hg. Soly in water at 25°: <1 mg/l. Sol in most organic solvents; less sol in ethanol. Decomp in uv light. LD50 orally in female rats: >10,000 mg/kg (Goldenthal).
Melting point: mp 65-66.5°
Toxicity data: LD50 orally in female rats: >10,000 mg/kg (Goldenthal)
Use: Herbicide.
Benfotiamine Benfuracarb Benfurodil Hemisuccinate Benidipine Benmoxine

Benfluralin
Benfluralin.svg
Identifiers
CAS number 1861-40-1 N
PubChem 2319
ChemSpider 2229 YesY
UNII 28224BUY6R YesY
Jmol-3D images Image 1
Properties
Molecular formula C13H16F3N3O4
Molar mass 335.28 g mol−1
Appearance Orange crystalline solid[1]
Density 1.338 g/mL
Melting point 65.0 to 65.5 °C; 149.0 to 149.9 °F; 338.1 to 338.6 K ([1])
Boiling point 121 to 122 °C; 250 to 252 °F; 394 to 395 K (at 0.6 mbar[1])
Solubility in water 1 mg/L[1]
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Benfluralin is an herbicide of the dinitroaniline class.[2] It is used to control grasses and other weeds. Annual use in the United States was approximately 700,000 pounds in 2004.[3]

The mechanism of action of benfluralin involves inhibition of root and shoot development.[4]