Fluroxypyr

Fluroxypyr

氟草烟

4-amino-3,5-dichloro-6-fluoro-2-pyridyloxyacetic acid

[(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acid

69377-81-7

C₇H₅Cl₂FN₂O₃

Herbicides > Pyridine herbicides

Herbicide

Tribenuron-methyl+fluroxypyr
Tribenuron Methyl+Carfentrazone-ethyl+Fluroxypyr-meptyl
Thifensulfuron-methyl+tribenuron-methyl+fluroxypyr
thifensulfuron-methyl + fluroxypyr 1-methylheptyl ester
thiencarbazone+tribenuron+thifensulfuron+fluroxypyr+MCPA
Rimsulfuron+Mesotrione+Fluroxypyr-meptyl
pinoxaden+clodinafop+2,4-D ester+fluroxypyr
Penoxsulam+Fluroxypyr-meptyl
Penoxsulam+Cyhalofop-butyl+Fluroxypyr-meptyl
Nicosulfuron+Fluroxypyr-meptyl+Halosulfuron-methyl
Nicosulfuron+Dicamba+Fluroxypyr
metsulfuron-methyl + thifensulfuron-methyl + fluroxypyr 1-methylheptyl ester
Mesotrione+Atrazine+Fluroxypyr-meptyl
MCPA-sodium+Glyphosate ammonium+Fluroxypyr-meptyl
MCPA+fluroxypyr
Halauxifen-methyl+Fluroxypyr-meptyl
Fluroxypyr-meptyl+thifensulfuron-methyl+ethametsulfuron+tribenuron-methyl
Fluroxypyr-meptyl+Carfentrazone-ethyl+Florasulam
Fluroxypyr+Nicosulfuron+Atrazine
Fluroxypyr+florasulam
Fluroxypyr+clodinafop-propargyl
Fluroxypyr+carfentrazone-ethyl
Fluroxypyr+2,4-D ester
Florasulam+MCPA-isooctyl+fluroxypyr-meptyl
Florasulam+Fluroxypyr-meptyl
florasulam+fluroxypyr+MCPA
fenoxaprop+fluroxypyr+dicamba
Cyhalofop-butyl+Fluroxypyr-meptyl
Cyhalofop-butyl+Clomazone+Fluroxypyr-meptyl
clopyralid+fluroxypyr+pyroxsulam
Clodinafop-propargyl+Carfentrazone-ethyl+Fluroxypyr-meptyl
Bromoxynil octanoate+Nicosulfuron+Fluroxypyr-meptyl
Bensulfuron-methyl+Fluroxypyr-meptyl
Premix Parters: pyrazophos;

Molecular weight:255.0; Physical form:White, crystalline solid. Density:1.09 (24 °C); Melting point:232-233 °C; Vapour pressure:3.784 ×10-6 mPa (20 °C, Knudsen effusion); Henry constant:1.06 × 10-8 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = -1.24 (unstated pH); pKa:2.94; Solubility:In water 91 mg/l (unspecified pH, 20 °C). In acetone 51.0, methanol 34.6, ethyl acetate 10.6, isopropanol 9.2, dichloromethane 0.1, toluene 0.8, xylene 0.3 (all in g/l, 20 °C).; Stability:Stable in acidic media. Fluroxypyr is acidic, and reacts with alkalis to form salts. DT50 in water 185 d ( pH 9, 20 °C). Stable at temperatures up to melting point. Stable in visible light.

Oral:Acute oral LD₅₀ for rats 2405 mg/ kg. Percutaneous:Acute percutaneous LD₅₀ for rabbits >5000 mg/kg. Mild eye irritant; non-irritating to skin (rabbits). Inhalation: LC₅₀ (4 h) for rats >0.296 mg/l air. Phytotoxicity:Non-phytotoxic to the crops for which its use is recommended.

Ecotoxicology: 
Algae: EC₅₀ (96 h) for green algae >100 mg/l.Bees:Not toxic to bees. LD₅₀ (contact, 48 h) >25 μg/bee.Birds:Acute oral LD₅₀ for mallard ducks and bobwhite quail >2000 mg/ kg.Daphnia: LC₅₀ (48 h) >100 mg/l.Fish: LC₅₀ (96 h) for rainbow trout and golden orfe >100 mg/l. 

Environmental fate: 
Animals:In rats, following oral administration, fluroxypyr is not metabolised, but is rapidly excreted unchanged, principally in the urine.Soil:In soil, fluroxypyr is rapidly degraded by micro-organisms in aerobic conditions to 4-amino-3,5-dichloro-6-fluoropyridin-2-ol, 4-amino-3,5-dichloro-6-fluoro-2-methoxypyridine, and CO₂. DT₅₀ in laboratory soil studies Plant:In plants, fluroxypyr is not metabolised, but biotransformation to conjugates occurs.

Signal Word:WARNING; Hazard Class:II(Moderately hazardous)