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Common name flufenoxuron (BSI, draft E-ISO, (m) draft F-ISO)
IUPAC name 1-[4-(2-chloro-a,a,a-trifluoro-p-tolyloxy)-2-fluorophenyl]-3-(2,6-difluorobenzoyl)urea
Chemical Abstracts name N-[[[4-[2-chloro-4-(trifluoromethyl)phenoxy]-2-fluorophenyl]amino]carbonyl]-2,6-difluorobenzamide
CAS RN [101463-69-8]
PHYSICAL CHEMISTRY
Composition Tech. grade is 98-100% pure. Mol. wt. 488.8 M.f. C21H11ClF6N2O3 Form Tech. is a white, crystalline solid. M.p. 169-172 ºC (decomp.) V.p. 6.52 ´ 10-9 mPa (20 ºC) KOW logP = 4.0 (pH 7) S.g./density 1.57 kg/l (20 ºC) (typical value) Solubility In water 7 ´ 10-11 g/l (pH 7, 15 ºC), 4 mg/l (25 ºC). In acetone 82, xylene 6, dichloromethane 24 (all in g/l, 25 ºC). Stability Stable £190 ºC; to natural sunlight; thin film on glass stable >100 h in simulated sunlight. DT50 11 d (ambient in water). On hydrolysis (25 ºC), DT50 206 d (pH 5), 267 d (pH 7), 36.7 d (pH 9), 2.7 d (pH 12). F.p. Not autoflammable; no explosive properties
APPLICATIONS
Biochemistry Chitin synthesis inhibitor.
Mode of action Insect and acarid growth regulator with contact and stomach action. Treated larvae die at the next moult or during the ensuing instar. Treated adults lay non-viable eggs.
Uses Control of immature stages of many phytophagous mites (Aculus, Brevipalpus, Panonychus, Phyllocoptruta, Tetranychus spp.) and insect pests on pome fruit, vines, citrus fruit, tea, cotton, maize, soya beans, vegetables and ornamentals.
Phytotoxicity None recorded.