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Product name

Oxyfluorfen

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Product description
Price
99 ¥

Oxyfluorfen

Common nameoxyfluorfen

IUPAC name2-chloro-a,a,a-trifluoro-p-tolyl 3-ethoxy-4-nitrophenyl ether

Chemical Abstracts name2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene

CAS RN[42874-03-3]

PHYSICAL CHEMISTRY

Mol. wt.361.7 M.f.C15H11ClF3NO4 FormOrange, crystalline solid. M.p.85-90 ºC; (tech., 65-84 ºC) B.p.358.2 ºC (decomp.) V.p.(pure a.i.) 0.0267 mPa (25 ºC) KOW logP = 4.47 S.g./density1.35 (73 ºC) SolubilityIn water 0.116 mg/l (25 ºC). Readily soluble in most organic solvents, e.g. acetone 72.5, cyclohexanone, isophorone 61.5, dimethylformamide >50, chloroform 50-55, mesityl oxide 40-50 (all in g/100 g, 25 ºC). StabilityNo significant hydrolysis in 28 d at pH 5-9 (25 ºC). Decomposed rapidly by u.v. irradiation; DT50 3 d (room temperature). Stable up to 50 ºC.

MAMMALIAN TOXICOLOGY

OralAcute oral LD50 for rats and dogs >5000 mg/kg. Skin and eyeAcute percutaneous LD50 for rabbits >10 000 mg/kg. Mild to moderate eye irritant; mild skin irritant (rabbits). InhalationLC50 for rats >5.4 mg/l. NOELIn chronic dietary trials, NOEL for rats 40, dogs 100, mice 2 mg/kg diet. ADI0.003 mg/kg. Toxicity classWHO (a.i.) U; EPA (formulation) IV

ECOTOXICOLOGY

BirdsAcute LD50 for bobwhite quail >2150 mg/kg. Dietary LC50 (8 d) for mallard ducks and bobwhite quail >5000 ppm. FishLC50 (96 h) for bluegill sunfish 0.2, trout 0.41, channel catfish 0.4 mg/l. DaphniaLC50 (48 h) 1.5 mg a.i./l. BeesNot toxic to honeybees at 0.025 mg a.i./bee. WormsPractically non-toxic; acute LC50 >1000 mg/kg soil.

ENVIRONMENTAL FATE

AnimalsFor details of metabolism, see I. L. Adler et al., J. Agric. Food Chem., 1977, 25, 1339. PlantsNot readily metabolised in plants. Soil/EnvironmentStrongly adsorbed on soil, not readily desorbed, and shows negligible leaching. Koc from 2891 (sand) to 32 381 (silty clay loam). Photodecomposition in water is rapid, and on soil is slow. Microbial degradation is not a major factor. Field dissipation DT50 5-55 d; soil DT50 (in dark) (aerobic) 292 d, (anaerobic) c. 580 d.

APPLICATIONS

BiochemistryProtoporphyrinogen oxidase inhibitor. Mode of actionSelective contact herbicide, absorbed more readily by the foliage (and especially the shoots) than by the roots, with very little translocation. UsesControl of annual broad-leaved weeds and grasses in a variety of tropical and subtropical crops, by pre- or post-emergence application at rates in the range 0.25-2.0 kg/ha. Particular crops include tree fruit (including citrus), vines, nuts, cereals, maize, soya beans, peanuts, rice, cotton, bananas, peppermint, onions, garlic, ornamental trees and shrubs, and conifer seedbeds. PhytotoxicitySoya beans and cotton may be injured by contact with oxyfluorfen.

Teachical 98%,97%,96%

Formulation types 240 g/l EC

Packaging 25kg/drum(TC); Many kinds of packaging

Apperance Pale-yellow Powder(TC); Pale-yellow Limpidity Liquid(EC).

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