Common name: Quizalofop -P-ethyl

Chemical name:

ethyl (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionate; ethyl (2R)-2-[4-[(6-chloro-2-quinoxalinyl)oxy]phenoxy]propanoate

Other names:

Assure II, Pilot Super, Targa D+ and Targa Super.

Molecular formulae: C₁₉H₁₇ClN₂O₄ Chemical Structure:

Physical and Chemical Properties

Molecular weight:372.8; Physical form: White, crystalline, odourless solid. Density:1.36 g/cm3; Melting point:76.1-77.1℃; Vapour pressure: 1.1 × 10-4 mPa(20℃); Partition coefficient(n-octanol and water): logP = 4.66 (23℃); Solubility: In water 0.61mg/l (20℃). In acetone, ethyl acetate and xylene >;250, 1,2-dichloroethane >;1000 (all in g/l, 22-23 ℃); in methanol 34.87, n-heptane 7.168 (both in g/l, 20℃).; Stability: Stable in neutral and acidic media, but unstable in alkaline media ;DT50 <1 d (pH<;9). Stable at high temperatures and in organic solvents.;

Purity: 95%, 98%

Uses:

Soybean, rape, potato, cotton, peanuts and so on like broadleaf crops.

Mode of actions:

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

Toxicology:

Oral: Acute oral LD50 for male rats 1210, female rats 1182, male mice 1753, female mice 1805 mg/kg.

Phytotoxicity: Most non-graminaceous crops are tolerant.

Environmental Profile

Ecotoxicology:

Algae: Assumed similar to racemate. Bees: Assumed similar to racemate. Birds: Acute oral LD50< for mallard ducks and bobwhite quail ＞2000 mg/kg. Daphnia: LC50 (48 h)

0.29 mg/l.Fish:LC50 (96 h) for rainbow trout ＞0.5 mg/l. Worms: LC50;＞1000 mg/ kg. Environmental fate:

Animals: The degradation pattern is the same as that for quizalofop-ethyl. Soil: In soil, degrades rapidly to quizalofop-P; DT50 ×1 d.Plant:The degradation pattern is the same as that for quizalofop-ethyl.

Transportation Information:

Signal Word: CAUTION; Hazard Class: III(Slightly hazardous)

Other products:

Straight Formulated Products: Quizalofop -P-ethyl 15% EC,Quizalofop -P-ethyl 8.8% EC ,Quizalofop -P-ethyl 5% EC, 10% EC, 20% EC;

Mixtures:

Fomesafen+Quizalofop-p-ethyl ; Fluoroglycofen-ethyl+Quizalofop-p-ethyl+Glyphosate ; Clomazone+Quizalofop-P-ethyl+Fomesafen;Emulsifiable concentrate.