Buprofezin

TC & FORMULATION: 98%TC, 25%WP, 50% WP, 25%SC, 50%SC

Structure Formula:

NOMENCLATURE

Common name buprofezin (BSI, draft E-ISO); buprofézine ((f) draft F-ISO)

IUPAC name 2-tert-butylimino-3-isopropyl-5-phenyl-1,3,5-thiadiazinan-4-one 

Chemical Abstracts name 2-[(1,1-dimethylethyl)imino]tetrahydro-3-(1-methylethyl)-5-phenyl-4H-1,3,5-thiadiazin-4-one 

CAS RN [69327-76-0]

PHYSICAL CHEMISTRY

Composition Tech. is 99.1%.  Mol. wt. 305.4  M.f. C16H23N3OS  Form White crystals; (tech., white or pale yellow crystalline powder).  M.p. 104.5-105.5 ºC  V.p. 1.25 mPa (25 ºC)  KOW logP = 4.3  Henry 4.24 ´ 10-1 Pa m3 mol-1 (calc.)  S.g./density 1.18 (20 °C)  Solubility In water 0.9 mg/l (25 ºC). In chloroform 520, benzene 370, toluene 320, acetone 240, ethanol 80, hexane 20 (all in g/l, 25 ºC).  Stability Stable in acidic and alkaline media. Stable to heat and light. 

APPLICATIONS

Biochemistry Probable chitin synthesis and prostaglandin inhibitor. Hormone disturbing effect, leading to suppression of ecdysis.  Mode of action Persistent insecticide and acaricide with contact and stomach action; not translocated in the plant. Inhibits moulting of nymphs and larvae, leading to death. Also suppresses oviposition by adults; treated insects lay sterile eggs.  Uses Insecticide with persistent larvicidal action against Homoptera, some Coleoptera and also Acarina. Effective against Cicadellidae, Deltocephalinae (leafhoppers) and Delphacidae (planthoppers) in rice, at 50-250 g/ha; Cicadellidae (lady beetle) in potatoes; Aleyrodidae (whitefly) in citrus, cotton and vegetables, at 0.025-0.075 g/ha; Coccidae, Diaspididae (scale insects) and Pseudococcidae (mealybugs) in citrus and top fruit, at 25-50 g/hl; Tarsonemidae in vegetables, at 250-500 g/ha. Suitable for IPM programmes. Phytotoxicity Slightly phytotoxic to Chinese cabbage.  Formulation types DP; GR; SC; WP.

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