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fluoxastrobin
IUPAC: (E)-{2-[6-(2-chlorophenoxy)-5-fluoropyrimidin-4-yloxy]phenyl}(5,6-dihydro-1,4,2-dioxazin-3-yl)methanone O-methyloxime
CAS: (1E)-[2-[[6-(2-chlorophenoxy)-5-fluoro-4-pyrimidinyl]oxy]phenyl](5,6-dihydro-1,4,2-dioxazin-3-yl)methanone O-methyloxime
Reg. No.: 361377-29-9
Formula: C21H16ClFN4O5
Activity: fungicides
Chemical Class: strobilurins, methoxyacrylates
Structure:
PHYSICAL AND CHEMICAL PROPERTIES
Technical fluoxastrobin is a white, crystalline solid. It is essentially insoluble in water (solubility of 0.0023 g/L in water at pH 7), but is highly soluble in dichloromethane, polyethylene glycol 400, acetone, ethyl acetate, acetonitrile, and dimethylsulfoxide. Technical fluoxastrobin has a melting point of 103-105°C, and a log Pow of 2.85 at 20°C. It does not dissociate in water at pH 4 to 9 and has a vapor pressure of 5.63x10-10 Pa at 20°C.
USE PATTERN AND FORMULATIONS
Pests/Application Sites:
Fluoxastrobin is a new strobilurin-type fungicidal active ingredient (a.i.) for the control of fungal diseases such as early blight, late blight, leaf spots, leaf rust, and Rhizoctonia solani. Fluoxastrobin has been registered for foliar use on peanuts, tuberous and corm vegetables, leaf petiole vegetables, fruiting vegetables, and turf, as well as seed treatment for potato, peanut and turf. Turf applications are labeled for professional pest control operators only, not for homeowners.
Types of Formulations:
Fluoxastrobin will be marketed in its technical form (94.8% a.i., a white crystalline solid) for use in formulations, and as the formulation HEC 480 SC Fungicide (40.3% a.i., an off- white suspension concentrate, Bayer CropScience).
Types and Methods:
HEC 480 SC Fungicide (Bayer CropScience) can be applied by chemigation or by ground or aerial spray, post-emergence. For seed treatment it is applied by slurry or mist type equipment.
Application Rates:
For foliar treatment of agricultural crops, HEC 480 SC (Bayer CropScience) fungicide can be applied up to 4 - 6 times per season at rates of 0.12 to 0.18 lb a.i./A , 7- to 14-day application intervals, and a maximum seasonal application rate of 0.72 lb a.i./A (including seed treatment use); PHIs range from 3 to 14 days. For turf, HEC 480 SC fungicide (Bayer CropScience) is applied up to 4 times per season at application rates of 0.27 to 0.55 lb a.i./A, a minimum 21-day application interval, and a maximum seasonal application rate of 2.2 lb a.i./A. For seed treatment on peanuts and potato seed pieces, HEC 480 SC is applied using slurry or mist-type equipment at a rate of up to 0.010 lb a.i./CWT.
Carrier: Water
HAZARD CHARACTERIZATION
Acute Toxicity
Fluoxastrobin technical has a low order of acute toxicity based on its classification in Toxicity Category III (LD50 > 2000 mg/kg) via the oral and dermal routes, and Toxicity Category IV by the inhalation route of exposure. Fluoxastrobin is a moderate eye irritant (Toxicity Category III), but is neither a dermal irritant nor a sensitizer.
The end use product HEC 480 SC Fungicide is an emulsifiable concentrate. This product has a very low order of acute toxicity based on its classification in Acute Toxicity Category IV for all exposure routes.
Refer to:http://www.epa.gov/pesticides/chem_search/reg_actions/registration/fs_PC-028869_01-Nov-05.pdf
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