101-42-8 Fenuron

Fenton s reagent, 14 38-39, 65 Fenton s reagent effluent treatment, 9 435 Fenugreek, 23 167 Fenuron, 13 324... 

Fig. 9.9 which was obtained using a Perkin Elmer 452 gas chromatograph shows the separation of 0.5ng amounts of four derivatised herbicides A, monoLinuron B, Fenuron C, Linuron and D, chlorobromuron. 

Fig. 9.9 Gas-chromatographic response of a standard mixture of brominated anilines derived from A monoLinuron B Fenuron C, Linuron and D, chlorobromuron (R=14min). Amount applied, 0.5ng. Perkin-Elmer, Model 452, gas chromatograph Sdurce Reproduced with permission of the Royal Society of Chemistry [138]...

More than 25 different substituted urea herbicides are currently commercially available [30, 173]. The most important are phenylureas and Cycluron, which has the aromatic nucleus replaced by a saturated hydrocarbon moiety. Benzthiazuron and Methabenzthiazuron are more recent selective herbiddes of the class, with the aromatic moiety replaced by a heterocyclic ring system. With the exception of Fenuron, substituted ureas (i.e., Diuron, Fluometuron, Fig. 10, Table 3) exhibit low water solubilities, which decrease with increasing molecular volume of the compound. The majority of the phenylureas have relatively low vapor pressures and are, therefore, not very volatile. These compounds show electron-donor properties and thus they are able to form charge transfer complexes by interaction with suitable electron acceptor molecules. Hydrolysis, acylation, and alkylation reactions are also possible with these compounds. 

SE Katz. Determination of the substituted urea herbicides linuron, monuron, diuron, neburon and fenuron in surface waters. J Assoc Off Anal Chem 49 452-456, 1966. 

Urea Fenuron, Siduron and Urox Monuion Monoiinuron Metobromuron Diuron, Neburon and Linuron Chlorotoluron Chlorbromuron Fluometuron Aniline m-Chloroaniline p-Chloroaniline p-Bromoaniline 3,4-Dichloroaniline 3-Chloro-4-methylaniline 3-Chloro-4-bromoaniline m-Trifluoromethylaniline... 

Adsorption of fenuron onto Ti02. (From Richard, C. and Benagana, S., Chemosphere, 33, 635, 1996. With permission.)... 

Catoran, Fenuron, Dicuron Electron capture Derivitivisation with 0.004mg polyfluorocarboxylic L 1 anlydride, then GLC [445]... 

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