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Chemical Identification
Common Name
Trifluralin
中文通用名
氟乐灵
IUPAC
a,a,a-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine
CAS
2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenamine
CAS No.
1582-09-8
Molecular Formula
C13H16F3N3O4
Molecular Structure
Category
Activity
Herbicide
Premix
Emulsifiable concentrate, granular, liquid, wettable powder. Premix Parters: dimethomorph prochloraz;
Physical Properties
Molecular weight:335.3; Physical form:Yellow-orange crystals. Density:1.36 (22 °C) (EEC A3); Melting point:48.5-49 °C; ( tech., 43-47.5 °C); Flash point:151 °C (closed cup);tech. 153 °C (open cup) (both Pensky-Martens); Vapour pressure:6.1 mPa (25 °C) (EEC A4); Henry constant:15 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 4.83 (20 °C) (EEC A8); Solubility:In water 0.184 ( pH 5), 0.221 ( pH 7), 0.189 ( pH 9) (all in mg/l) (EEC A6); tech. 0.343 ( pH 5), 0.395 ( pH 7), 0.383 ( pH 9; Stability:Stable at 52 °C (highest storage temperature tested). Stable to hydrolysis at pH values of 3, 6 and 9 (52 °C). Decomposed by u.v. irradiation (E. Leitis & D. G. Crosby, J. Agric. Food Chem., 1974, 22;
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/kg. Percutaneous:Acute percutaneous LD50 >5000 mg/kg (rabbits). Non-irritating to skin; slightly irritating to eyes (rabbits). Inhalation: LC50 (4 h) for rats >4.8 mg/l. ADI:0.0072 mg/kg b.w.
Environmental Profile
Ecotoxicology: 
Algae: EC50 (7 d) for Selenastrum capricornutum 12.2 mg/l; NOEC 5.37 mg/l.Bees: LD50 (oral and contact) >100 µg/bee.Birds:Acute oral LD50 for bobwhite quail >2000 mg/kg. Dietary LC50 (5 d) for bobwhite quail and mallard ducks >5000 mg/kg.Daphnia: LC50 (48 h) 0.245 mg/l; NOEC (21 d) 0.051 mg/l.Fish:LC50 (96 h) for young rainbow trout 0.088, young bluegill sunfish 0.089 mg/l.Worms: LC50 (14 d) >1000 mg/kg dry soil; NOEC (reduced bodyweight) <171 mg/kg.Other aquatic spp.: LD50 (96 h) for grass shrimp (Palaemonetes sp.) 0.64 mg/l. 

Environmental fate: 
Animals:Degradation in animals is as for soil (J. L. Emmerson & R. C. Anderson, Toxicol. Appl. Pharmacol., 1966, 9, 84-97). Following oral administration, c. 70% is eliminated in the urine and 15% in the faeces within 72 h.Soil:Adsorbed by the soil, and is extremely resistant to leaching. Little lateral movement in the soil. Metabolism involves dealkylation of the amino group, reduction of the nitro group to an amino group, partial oxidation of the trifluoromethyl group to a carPlant:Degradation in plants is as for soil.
Transport Information
Signal Word:WARNING; Hazard Class:II(Moderately hazardous)

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