Carbamates asulam

Carbanilates and carbamates Asulam, barban, bendiocarb, carbetamide, chlorpropham, propham, triallate... 

High performance Hquid chromatography with electrochemical detection has been used to determine 2—7 ppb of carbamate pesticides in water (40). The investigated pesticides were aminocarb, asulam, j -butylphenyknethylcarbamate (BPMC), carbaryl, carbenda2im, chlorpropham, desmedipham, and phenmedipham. 

The carbamate -NH- moiety present in asulam has acidic properties (e.g. the pA a value for asulam is 4.82). On the other hand, the -NH2 moiety present in sulfanilamide has a slightly alkaline character. Considering these properties, the partition of these analytes into an organic solvent should depend strongly on the pH value in the aqueous phase. 

Butyne, see 1,1,1-Trichloroethane Butyric acid, see Butane Camphenilone, see Camphene Carbamic acid, see Asulam. Carbofuran... 

Chemical/Physical Forms water-soluble salts (Hartley and Kidd, 1987). When heated to 75 °C, asulam decomposed to sulfanilic acid, carbamic acid, and sulfanilamide. At 90 °C, 4-nitro- and 4-nitrosobenzene sulfonic acids were released (Rajagopal et al., 1984). 

Asulam carbamate, sulfonamide Atrazine heterocyclic nitrogen, triazine Azaconazole heterocyclic nitrogen, triazole Azamethiphos oxazole, phosphoro organic, phosphoro thioate, pyridine Azinphos-ethyl benzotriazine, phosphoro organic, phosphoro dithioate... 

Asulam (carbamate pesticide) Irrigation, tap waters UV-assisted analyte photodegradation (pH 8.3) CL 40 pg L 1 Multi-commuted flow system oxidation of the photoproducts by permanganate in acidic sulphuric medium or by hexacyanoferrate(II) in alkaline medium [416]... 

A. Chivulescu, M. Catala-Icardo, J.V.G. Mateo, J.M. Calatayud, New flow-multi-commutation method for the photo-chemiluminometric determination of the carbamate pesticide asulam, Anal. Chim. Acta 519 (2004) 113. 

Cottrell and Hey wood (1965) were the first to describe the herbicidal action of benzene sulfonyl carbamates. The most active member of this group is asulam, methyl 4-aminophenylsulfonyl carbamate (12). 

The 4-nitro analogue of asulam is methyl (4-nitrophenylsulfonyl)carbamate (nisulam, MB 8882, 13). 

Almost all of the carbamate herbicides inhibit photosynthesis, as has been shown by the investigations of Moreland and Hill (1959). Asulam and terbutol do not inhibit photosynthetic electron transport in vitro, while the other carbamates do only in high concentrations not occurring in vivo. The conclusion of Corbett (1974), that the inhibition of photosynthesis is only a side-effect of these compounds, therefore seems justified. 

Methylaminoacetic acid. SeeSarcosine 4-Methyl-2-aminoanisole. See p-Cresidine (Methylamine) benzene. See N-Methylaniline 1-Methyl-2-aminobenzene. See o-Toluidine N-Methylaminobenzene. See N-Methylaniline 1-Methyl-2-aminobenzene hydrochloride 2-Methyl-1-aminobenzene hydrochloride. See o-Toluidine hydrochloride Methyl N-(4-aminobenzenesulfonyl) carbamate. See Asulam... 

Methyl sulfanilyl carbamate. See Asulam Methyl sulfate. See Dimethyl sulfate Methyl sulfide. See Dimethyl sulfide Methyl sulfinylmethane. See Dimethyl sulfoxide 5-Methyl-2-sulfonanilamido-1,3,4-thiadiazole. See Sulfamethizole... 

S-((5-Methoxy-2-oxo-l,3,4-thiadiazol-3(2//)-yl)methyl) 0,0-dimethyl phosphorodithioate, see Methidathion Methoxypropazine, see Prometon Methyl aldehyde, see Formaldehyde Methyl A/ -(4-aminobenzenesulfonyl)caibamate, see Asulam A -(((Methylamino)caiboityl)oxy)ethanimidothioate, see Methomyl A -(((Methylamino)caibonyl)oxy)ethanimidothioic acid methyl ester, see Methon l Methyl((4-aminophenyl)sulfonyl)carbamate, see Asulam Methylazinphos, see Azinphos-methyl... 

Other significant groups of herbicides include polysubstituted benzenes, e.g. Trifluralin carbamates, e.g. Asulam acetamides, e.g. Propachlor and the triazoles, e.g. Amitrole. 

A concentration of 2.7 ppm chlorpropham was observed to inhibit the growth of Chlorella pyrenoidosa this alga was also inhibited by asulam and M and B 8882 (also carbamate herbicides) at 0.6 and 25.0 ppm, respectively (Wright 1972). 

Asulam (Figure 5.19) is a benzenesulfonyl carbamate, and its mode of action was originally proposed to be similar to that of N-phenylcarba-mates. Onion root tip cells treated with asulam become arrested in metaphase, suggesting interference with MT assembly or function (Section 5.4 and Ref. 152). 

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