chlorfluazuron
95%tech, 5%ec,
Insecticide
benzoylurea
NOMENCLATURE
Common name chlorfluazuron (BSI, draft E-ISO, (m) draft F-ISO)
IUPAC name 1-[3,5-dichloro-4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]-3-(2,6-difluorobenzoyl)urea
Chemical Abstracts name N-[[[3,5-dichloro-4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy]phenyl]amino]carbonyl]-2,6-difluorobenzamide
CAS RN [71422-67-8] Development codes IKI-7899 (Ishihara Sangyo); CGA 112 913 (Ciba-Geigy); PP145 (ICI); UC 64 644 (Rhône-Poulenc)
PHYSICAL CHEMISTRY
Composition Tech. is ³94.0%. Mol. wt. 540.7 M.f. C20H9Cl3F5N3O3 Form White crystals. M.p. 226.5 ºC (decomp.) V.p. <1 ´ 10-5 mPa (20 ºC) KOW logP = 5.8 (unionised) Henry <5.41 ´ 10-4 Pa m3 mol-1 S.g./density 1.663 (20 ¡ãC) Solubility In water <0.01 mg/l (20 ºC). In hexane <0.01, n-octanol 1, xylene 2.5, methanol 2.5, toluene 6.6, isopropanol 7, dichloromethane 22, acetone 55, cyclohexanone 110 (all in g/l, 20 ºC). Stability Stable to heat and light, and to hydrolysis. pKa 8.10, v. weak acid F.p. 224.0-224.5 ¡ãC (OECD 102)
APPLICATIONS
Biochemistry Chitin synthesis inhibitor (R. Neumann & W. Guyer, Proc. 10th Int. Congr. Plant Prot., 1983, 1, 445). Mode of action Insect growth regulator which acts as an anti-moulting agent, leading to death of the larvae and pupae. Uses Control of Heliothis, Spodoptera, Bemisia tabaci and other chewing insects on cotton; and Plutella, Thrips and other chewing insects on vegetables. Also used on fruit, potatoes, ornamentals and tea. Applied at 2.5 g/hl. Formulation types EC; SC; UL.
|
product name |
chlorfluazuron 95% tc |
chlorfluazuron 5% ec |
|
appearance |
|
pale brown liquid |
|
a.i.content |
95.6% |
5.15% |
|
moisture |
0.1% |
0.3% |
|
acidity |
0.1% |
|
|
ph value |
|
5.3 |
|
emulsion stability |
|
qualified |
