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Basic information

  • Name:

  • Propanoic acid,2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]-, butyl ester

  • CAS No.:

  • 69806-50-4

  • Formula:
  • C19H20 F3 N O4
  • Synonyms:
  • Butyl a-[4-(5-trifluoromethyl-2-pyridyloxy)phenoxy]propionate;Fluazifop-butyl; Fusilade; Fusilade W; Halokon; Onecide; PP 009; TF 1169

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Chemistry

Fluazifop-butyl(79241-46-6) is a derivative of fluazifop. Fluazifop-butyl(79241-46-6) exists as a racemic mixture consisting of the R and S enantiomers.
Molecular structure:
Formula: C19H20F3NO4.
Molecular weight: 383.36.
Appearance: oily liquid.
Color: straw coloured to brown.
Odor: odorless.
Melting point: 5 ℃.
Boiling point: 170℃(0.5 mm Hg).
Solubility: 2 ppm in water; 2% in propylene glycol Miscible with methanol, acetone, cyclohexanone, hexane, xylene and methylene dichloride.

Uses

Fluazifop-butyl(79241-46-6) is a selective systemic post-emergent herbicide which can be absorbed by the leave, stem and root of weeds.  It can be applied to most broadleaf crops with little volume. It is effective against crabgrass and bermudagrass. It is most effective applied to weeds in the two- to four-leaf stage.

Toxicity Data With Reference

1.     orl-rat LD50:2910 mg/kg
     NNGADV    Nippon Noyaku Gakkaishi. 15 (1990),305. 
2.     ipr-rat LD50:1620 mg/kg
     NNGADV    Nippon Noyaku Gakkaishi. 15 (1990),305. 
3.     orl-mus LD50:1490 mg/kg
     PEMNDP    Pesticide Manual. 9 (1991),400. 
4.     ipr-mus LD50:1240 mg/kg
     NNGADV    Nippon Noyaku Gakkaishi. 15 (1990),305. 
5.     orl-rbt LD50:621 mg/kg
     85JFAN    “Agrochemicals Handbook“, with updates, Hartley, D., and H. Kidd, eds., Nottingham, UK, Royal Soc. of Chemistry, 1983-86 A535 ,1984. 
6.     orl-gpg LD50:2659 mg/kg
     85JFAN    “Agrochemicals Handbook“, with updates, Hartley, D., and H. Kidd, eds., Nottingham, UK, Royal Soc. of Chemistry, 1983-86 A535 ,1984. 

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. When heated to decomposition it emits toxic fumes of F- and NOx.

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