Quinmerac

Quinmerac

氯甲喹啉酸

7-chloro-3-methylquinoline-8-carboxylic acid

7-chloro-3-methyl-8-quinolinecarboxylic acid

90717-03-6

C₁₁H₈ClNO₂

Herbicides > Aromatic acid herbicides

Herbicide

Quinmerac has a wide window for application but is most active if applied pre-emergence or early post-emergence. The product is absorbed by the roots and the foliage and has auxin-like activity. Pre-emergence applications result in stunting or cessation of weed growth. Post-emergence applications also result in discoloration of the leaves prior to plant death. Optimum post-emergence activity is obtained when applications are made in humid conditions or when adjuvants are used.

Quinmerac is safe for use in oilseed rape and sugar beet. It has residual activity lasting for several months, depending on the application rate and temperature of the soil.

CROP USES:
sugar beets, canola, PGR: citrus, olives

WP, SC.Premix Parters:DNOC

Molecular weight:221.6g/mol;Colourless, odourless solid. Melting point:239 ℃;V.p. <0.01 mPa (20℃);KOWlogP = -1.11 (pH 7);Henry <9.9×10-6Pa m3/mol;S.g./density 1.49;Solubility In water (deionised) 223 mg/l, (pH 9) 240 g/l (both 20℃).In acetone, dichloromethane 2,ethanol 1, n-hexane, toluene, ethyl acetate <1 (all in g/kg, 20℃).Stability Stable to heat and light, and at pH 3-9.

Oral Acute oral LD50 for rats >5000 mg/kg.Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg.Non-irritating to skin or eyes (rabbits).Inhalation LC50 (4 h) for rats >5.4 mg/l.

Mallard [5 days]	LC50 >5,000 mg/kg
Virginia quail	LD50 >2,000 mg/kg
Rainbow trout [96hrs]	LC50 >87 mg/litre
Carp [96hrs]	LC50 >100 mg/litre

Fate in soil:
The half-life of quinmerac in soil is temperature dependent, degradation being faster under warmer conditions. BASF says that due to the rapid degradation rate, there is a low probability of ground water contamination.

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