Quizalofop-P-Ethyl
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NOMENCLATURE

IUPAC NameCAS Registry Number

(R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionic acid Chemical Abstracts name (R)-2-[4-[(6-chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acid

100646-51-3

PHYSICAL CHEMISTRY

Composition Tech.Molecular WeightMolecular FormulaAppearanceMelting Point S.g./density Solubility Stability Specific Rotation

>95%

372.8

C19H17N2ClO4

White, crystalline, odourless solid

76.1-77.1 ºC

1.36 (20 ºC)

In water 0.61 mg/l (20 ºC). In acetone, ethyl acetate and xylene >250, 1,2-dichloroethane >1000 (all in g/l, 22-23 ºC); in methanol 34.87, n-heptane 7.168 (both in g/l, 20ºC).

Stable in neutral and acidic media, but unstable in alkaline media; DT50 <1 d (pH 9). Stable at high temperatures and in organic solvents.

[α]D20 +35.9(20 ºC)

APPLICATIONS

UsesMode of ActionFormulation

Systemic herbicide, absorbed from the leaf surface, with translocation throughout the plant, moving in both the xylem and phloem, and accumulating in the meristematic tissue.

Selective post-emergence control of annual and perennial grass weeds in potatoes, soya beans, sugar beet, peanuts, oilseed rape, sunflowers, vegetables, cotton, and flax.

95%TC, 8.8%EC