Quinclorac

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Quinclorac

中文通用名

二氯喹啉酸

IUPAC

3,7-dichloroquinoline-8-carboxylic acid

CAS

3,7-dichloro-8-quinolinecarboxylic acid

CAS No.

84087-01-4

Molecular Formula

C₁₀H₅Cl₂NO₂

Molecular Structure

General Product Information

Category

Herbicides > Aromatic acid herbicides

Activity

Herbicide

Premix

Quinclorac+Pyribenzoxim+Pyrazosulfuron-ethyl
Quinclorac+Pyrazosulfuron-ethyl+Cyhalofop-butyl
Quinclorac+Pretilachlor+Pyrazosulfuron-ethyl
Quinclorac+Carfentrazone-ethyl+Pyrazosulfuron-ethyl
Quinclorac+Bispyribac-sodium+Penoxsulam
Quinclorac+Atrazine
Pyrazosulfuron-ethyl+Quinclorac+Bispyribac-sodium
Pyrazosulfuron-ethyl+quinclorac
Penoxsulam+Quinclorac
Penoxsulam+Pyrazosulfuron-ethyl+Quinclorac
Carfentrazone-ethyl+quinclorac
Bentazone+Quinclorac
Bensulfuron-methyl+quinclorac
Dry flowable, granular, suspension concentrate, wettable powder.
Premix Parters:acetochlor; benazolin

Physical & Safety Data

Physical Properties

Molecular weight:242.1g/mol; Colourless crystals; Melting point:274℃; V.p. <0.01 mPa (20 ℃)KOW logP = -1.15 (pH 7);Henry <3.72×10-2Pa m3mol-1(calc.) S.g./density 1.75; Solubility In water 0.065 mg/kg (pH 7, 20℃). In ethanol, acetone 2 g/kg (20℃). Practically insoluble in other organic solvents.Stability Stable to heat and light and between pH 3 to 9.

Toxicology

Oral Acute oral LD50 for rats 2680, mice >5000 mg/kg.Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Non-irritating to eyes and skin (rabbits). Inhalation LC50 (4 h) for rats >5.2 mg/l.

Environmental Profile

ECOTOXICOLOGY
Birds Acute oral LD50 for mallard ducks and quail >2000 mg/kg. Dietary LD50 (8 d) for mallard ducks >5000 mg/kg.Fish LC50 (96 h) for rainbow trout, bluegill sunfish, carp, and minnows >100 mg/l.Daphnia LC50 (48 h) 113 mg/l. Other aquatic spp. LC50 (96 h) for mysid shrimp (Mysidopsis bahia) 67, blue crab >100 mg/l. LC50 (48 h) for Quahog clam >100 mg/l.Bees Non-toxic by contact or ingestion.
ENVIRONMENTAL FATE
Animals More than 90% of radiolabelled quinclorac administered orally to rats is excreted in the urine within 5 days.Plants In plants, systematically translocated to the roots and to the leaves.Soil/Environment Only slightly adsorbed by the soil. Depending on soil type and organic matter content, the chemical is relatively mobile, this mobility increasing with higher percolation rates in fields. Quinclorac is degraded by micro-organisms, 3-chloro-8-quinolinecarboxylic acid being a major metabolite. Water regimes causing changes in moisture content in rice soils enhance the microbial degradation. Photolytic decomposition in active paddy water occurs in the presence of sunlight and dissolved humic acids.

Transport Information

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