Quizalofop-p-ethyl
Trade and Other Names: Trade and other names of products containing quizalofop-p-ethyl include Assure II, Copilot, Pilot Super, Sheriff, Targa D+, and Targa Super Quizalofop. The compound may be found in formulations with other herbicides such as benazolin and clopyralid (trade name Benazalox).
Chemical Class: phenoxy compound
Introduction
Quizalofop-p-ethyl is a selective, postemergence phenoxy herbicide. It is used to control annual and perennial grass weeds in potatoes, soybeans, sugar beets, peanuts, vegetables, cotton and flax, as well as other crops.
Quizalofop-p and quizalofop-p-ethyl should not be confused with quizalofop or quizalofop ethyl. The latter two compounds are distinctly different from the former two. The material in this profile refers only to the technical compound quizalofop-p-ethyl unless otherwise stated.
Physical Properties:
Appearance: The compound is a pale brown crystal.
Chemical Name: (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionic acid
CAS Number: 100646-51-3
Molecular Weight: 372.80
Water Solubility: 0.4 mg/L @ 20 C
Solubility in Other Solvents: s. in hexane; v.s. in acetone, ethanol, and xylene
Melting Point: 76-77 C
Vapor Pressure: 0.000011 mPa @ 20 C
Adsorption Coefficient: 510