The rate of biodegradation of the alkyl chain of alkylbenzene sulphonates (ABS) carried out of the alkyl chain by pure adapted cultures of Pseudomonas fluorescens and Aspergillus sp. has been examined in the presence of four anorganic test compounds of commercial detergents. The strains were isolated from sewages by elected cultures. ...

...secondary alkyl amines with a substituted benzenesulfonic acid and sulfuric acid (generic name). 721.9220 Section 721.9220...secondary alkyl amines with a substituted benzenesulfonic acid and sulfuric acid (generic name). (a)...

...secondary alkyl amines with a substituted benzenesulfonic acid and sulfuric acid (generic name). 721.9220 Section 721.9220...secondary alkyl amines with a substituted benzenesulfonic acid and sulfuric acid (generic name). (a)...

The purpose of this work is to test benzenesulfonic acid (BSA) as a catalyst in the alkylation of phenol with polyisobutylene (PIB). This material is used as a catalyst in the production of technical C/sub 5/-C/sub 12/ tert-alkylphenol. Finds that the optimal compromise between acceleration of the reaction and the alkylate viscosity ...

The rate of biodegradation of linear alkyl benzenesulfonate was increased as temperature was increased from 5 to 35C in 10C increments. At 45C and 55C, the compound was not degraded. Biodegradation was enhanced by acclimatizing the sewage seed to LAS when...

... Alkylbenzenesulfonic acid and sodium salts. 721.1650 Section 721.1650... Alkylbenzenesulfonic acid and sodium salts. (a) Chemical substances and significant...as alkyl benzenesulfonic acid and sodium salts (PMNs P-88-1783,...

A new method to obtain the signal associated with an electrophoretic blank is presented to be included in the calibration procedures. The signal assigned to the blank is obtained by direct integration of the background noise using extrapolated values of the base-peak width at different concentrations in order to obtain the zero concentration. Detection limits that are better adjusted to a ...

A combination of NMR, kinetic, and computational methods are used to examine reactions of lithium diethylamide in tetrahydrofuran (THF) with n-dodecyl bromide and n-octyl benzenesulfonate. The alkyl bromide undergoes competitive S(N)2 substitution and E2 elimination in proportions independent of all concentrations except for a minor medium effect. Rate ...

Discrimination and quantitation of the 20 positional isomers of C10-C13 linear alkyl benzenesulfonates (LASs), based on the use of reversed-phase liquid chromatography-electrospray ionisation in negative ion mode ion-trap mass spectrometry, was undertaken. Discrimination was achieved by LAS MS-MS analysis into the ion trap, by monitoring specific fragment ...

Synthesis, characterization, and interfacial properties of hydroxy-substituted alkyl benzenesulfonates, sodium 2-hydroxy-3-decyl-5-octylbenzenesulfonate (C10C8OHphSO3Na) and 2-hydroxy-3-octyl-5-decylbenzenesulfonate (C8C10OHphSO3Na), are reported. The dynamic dilational properties of the surfactants are expounded by means of oscillating the bubble/drop ...

A series of 4-[1-(substituted aryl/alkyl carbonyl)-benzoimidazol-2-yl]-benzene sulphonic acids (1-20) was synthesized and evaluated, in vitro, for their antimicrobial activity and the results indicated that compounds 4-[1-(4-Nitrobenzoyl)-1H-benzoimidazol-2-yl]-benzenesulfonic acid (9) and ...

This article describes an investigation of the structure and properties-detergent-dispersant, antioxidant, anticorrosion, antiwear, -- of Dialkyphenol-sulfonate additives. The 2,4-dialkylphenols used for this investigation were obtained by alkylation of p-cresol, p-tert-butylphenol, and p-tert-nonylphenol with olefins in the presence of benzenesulfonic ...

...triazine amino substituted benezenesulfonic acid reaction product with naphthalenesulfonato...phenyl azo substituted benzenesulfonic acid copper compound (generic). 721.10126...triazine amino substituted benezenesulfonic acid reaction product with...

The utilization of radiation for controlling environmental pollutants such as stack gas, sludge, and microorganisms in waste water is described. The sizes and costs of various irradiation sources such as /sup 60/Co, /sup 137/Cs, atomic reactors, accelerators, and spent fuel used for waste water treatment are compared, showing accelenators to have the lowest cost, except for atomic ...

How conditions of alkylation of low-grade metamorphic coals with methanol in the presence of benzenesulfonic acid influence the yield of extractable matter was experimentally studied and relevant regression equations were obtained. It was shown that catalytic methylation considerably increases the yield of the extractable matter, as well as reducing the ...

...2011-07-01 false Benzenesulfonic acid, amino substituted phenylazo-. 721... § 721.1643 Benzenesulfonic acid, amino substituted phenylazo-. ...generically as a benzenesulfonic acid, amino substituted phenylazo-...

...2010-07-01 false Benzenesulfonic acid, amino substituted phenylazo-. 721.1643...721.1643 Benzenesulfonic acid, amino substituted phenylazo-. (a) Chemical...generically as a benzenesulfonic acid, amino substituted phenylazo- (PMN...

The present paper describes a simple isocratic reverse phase HPLC method for the determination of four genotoxic alkyl benzenesulfonates (ABSs) viz. methyl, ethyl, n-propyl and isopropyl benzenesulfonates (MBS, EBS, NPBS and IPBS) in amlodipine besylate (ADB). Good resolution between benzene sulfonic acid (BSA), MBS, EBS, NPBS, IPBS ...

It has been observed that the sulfonate portion of alkyl benzene sulfonate (ABS) will undergo microbial attack in certain pure and mixed cultures if an energy source, such as glucose, is available. The evidence for this is provided by the stoichiometric relationship between the reduction of ABS concentration and the appearance of ...

It has been observed that the sulfonate portion of alkyl benzene sulfonate (ABS) will undergo microbial attack in certain pure and mixed cultures if an energy source, such as glucose, is available. The evidence for this is provided by the stoichiometric relationship between the reduction of ABS concentration and the appearance of ...

Alkyl Halides, SR, SR, SR. C1 (g), BH, AP. Seawater DMS, NB, GH, AB. Swtr NMHC, BB. Swtr Chlorophyll, NB, AB. Swtr Nitrogen, BH. Swtr T, S, other, NB, AP ...

The rate of biodegradation of linear alkyl benzenesulfonate was increased as temperature was increased from 5 to 35C in 10C increments. At 45C and 55C, the compound was not degraded. Biodegradation was enhanced by acclimatizing the sewage seed to LAS when compared to using unacclimatized seed and seed acclimatized to temperature only. Carbon chain ...

Miscibilities of various hydrocarbons in systems containing n-butanol and aqueous solutions of sodium p-cymenesulfonate (sodium-2-methyl-5-isopropyl-benzenesulfonate) (2.5 moles/kg H/sub 2/O) have been determined at 25 C. The hydrocarbons included aliphatic hydrocarbons, cyclohexane, aromatic hydrocarbons, and various hydrocarbon mixtures. The amount of n-butanol required to ...

Smiles-type free radical rearrangements of arenesulfonates and arenesulfonamides are exploited for synthetic purposes. 4-Substituted benzenesulfonates cause Smiles-type rearrangement only when substituted by an electron withdrawing group. Therefore, ipso-attack by an alkyl radical on arenesulfonates takes place in an electrophilic manner. Arenesulfonamides ...

3-aminobenzamide (3AB) is a potent inhibitor of poly(ADP-ribose) synthesis and has been reported to inhibit DNA repair. Inhibition of poly(ADP-ribose) synthesis by 3AB results in a potentiation of the cytotoxic effects of alkylating agents and synergistically increases the frequency of sister chromatid exchanges (SCEs) induced in ...

Pseudomonas sp. HK-1 showed a direct relation between the concentration of alkyl benzene sulfonate (ABS) supplied and cell yields. Since growth on ABS alone did not occur, it was necessary to correlate the total energy obtained by the cells to the ABS concentration when glucose was supplied in a limiting ...

This paper describes the synthesis and characterization of AB block copolymers based on w-((4-cyano-4'-biphenyl)oxy)alkyl vinyl ether (6-n) with alkyl being ethyl (6-2), propyl (6-3), nonyl (6-9) and undecanyl (6-11) with 1H, 1H, 2H, 2H-perfluorodecyl vin...

Growth of a Bacillus species at the expense of an alkylbenzene sulphonate (ABS) synthetic detergent homologue (1-phenylundecane-p-sulphonate, 11-ABS) containing an odd number of carbon atoms in the alkyl side chain induced an enzyme complement able to biodegrade 11-ABS by alkyl side-chain ...

...Benzenesulfonic acid, 2,2â²-(1,2-ethenediyl)bis[(4,6-dichloro-1... Benzenesulfonic acid, 2,2�-(1,2-ethenediyl)bis[(4,6-dichloro-1...a benzenesulfonic acid,...

...2011-07-01 false Benzenesulfonic acid, 2,2â²-(1,2-ethenediyl...ethanol] (1:2); Benzenesulfonic acid, 5-[[4-[bis(2-hydroxyethyl...Substances § 721.9790 Benzenesulfonic acid,...

...Disubstituted benzenesulfonic acid, alkali metal salt (generic). 721.10097 Section 721...Disubstituted benzenesulfonic acid, alkali metal salt (generic). (a) Chemical substance...disubstituted benzenesulfonic acid, alkali metal salt (PMN P-03-642) is subject to...

...Disubstituted benzenesulfonic acid, alkali metal salt (generic). 721.10097 Section...Disubstituted benzenesulfonic acid, alkali metal salt (generic). (a) Chemical substance...disubstituted benzenesulfonic acid, alkali metal salt (PMN P-03-642) is...

3-Aminobenzamide (3-AB), an inhibitor of poly(ADP-ribosylation), is lethal to human fibroblasts with damaged DNA. Its cytotoxicity was determined relative to a number of factors including the types of lesions, the kinetics of repair, and the availability of alternative repair systems. A variety of alkylating agent, UV or gamma irradiation, or ...

A recently developed enzyme-linked immunosorbent assay (ELISA) for the determination of linear alkyl benzenesulfonates (LAS) and long chain sulfophenyl carboxylates (SPCs) has been evaluated for its application in wastewater control analysis. This ELISA based on the use of polyclonal antibodies in an indirect format shows an IC50 of 28.1 +/- 3.2 microg ...

Rates of solvolysis are presented for a number of polar substrates in light and heavy water from which the rate ratios k/sub /D/sub 2/O/k/sub /H/sub 2/ O may be obtained. Compounds studied in clude methyl, o-methyl-, p-methyl-, p- methoxy-, and pfluoro-benzenesulfonate, the alpha - and beta -methylation series of alkyl methanesulfonates, methyl ...

Protein 3-nitrotyrosine (3-NT) has been recognized as an important biomarker of nitroxidative stress associated with inflammatory and degenerative diseases, and biological aging. Analysis of protein-bound 3-NT continues to represent a challenge since in vivo it frequently does not accumulate on proteins in amounts detectable by quantitative analytical methods. Here, we describe a novel approach of ...

Protein 3-nitrotyrosine (3-NT) has been recognized as an important biomarker of nitroxidative stress associated with inflammatory and degenerative diseases, and biological aging. Analysis of protein-bound 3-NT continues to represent a challenge since in vivo it frequently does not accumulate on proteins in amounts detectable by quantitative analytical methods. Here, we describe a novel approach of ...

In addition to the large range of applications proposed in literature, ionic liquids (ILs) have been recently reported to be able to form aqueous biphasic systems (ABS). They could thus be interesting media in biotechnological applications for the separation and purification of vital biomolecules. Therefore, in this work, a systematic study involving a large number of ...

Branched alkylbenzenesulfonate gemini surfactants: sodium 6,6'-(propane-1,3-diylbis(oxy))bis(3-(2-propylpentyl)benzenesulfonate) (C8BC3C8B), sodium 6,6'-(propane-1,3-diylbis(oxy))bis(3-(3,5,5-trimethylhexyl)benzenesulfonate) (C9BC3C9B), and sodium 6,6'-(propane-1,3-diylbis(oxy))bis(3-(2,4,4-trimethylpentan-2-yl)benzenesulfonate) ...

Bench-scale experiments were made to determine the amount of ozone necessary to eliminate detergent from water. The experiments were made using the cyclical detergent alkyl benzene sulfonate (ABS) and the linear detergent dioctyl sulfosuccinate in distill...

ABS>A radiation resistant lubricant is described that is prepared by reacting p-triphenyl ether with an alkyl halide and/or an olefin containing up to 20 carbon atoms per molecule. (C.E.S.)

3-Aminobenzamide (3AB) is a potent inhibitor of poly(ADP-ribose) synthesis and has been reported to inhibit DNA repair. Inhibition of poly(ADP-ribose) synthesis by 3AB results in a potentiation of the cytotoxic effects of alkylating agents and synergistically increases the frequency of sister chromatid exchanges (SCEs) induced in ...

This paper discusses using kinetic, spectroscopic, and ab initio studies of the prooxidant reaction of vitamin E derivatives to determine second-order rate constants for the reaction of six tocopheroxyl radicals with five alkyl hydroperoxides in benzene along with the first adiabatic ionization potentials of the alkyl hydroperoxides. ...

A literature survey of ground water contaminants indicated that aquifers are repositories for hazardous wastes, including N- and S-substituted benzene derivatives. The susceptibility of several anilines, benzamides, benzenesulfonic acids and benzenesulfonamides to anaerobic metabolism by aquifer microorganisms was examined. Under sulfate-reducing and methanogenic conditions ...

Surfactant formulations that are used in enhanced oil recovery consist of mixtures of various components. We have continued studies on mixtures of an anionic surfactant, C/sub 8/benzenesulfonate, and a nonionic surfactantt. C/sub 12/EO/sub 8/alcohol. Adsorption data on alumina and silica show that strong interactions between the two surfactants occur. On alumina on which the ...

polymer with formaldehyde and urea 2) 52277-29-9 Benzenesulfonic acid, hydroxy-, polymer with formaldehyde and urea, sodium salt 3) 71608-70-3 Benzenesulfonic acid,...

A literature survey of ground water contaminants indicated that aquifers are repositories for hazardous wastes, including N- and S-substituted benzene derivatives. The susceptibility of several anilines, benzamides, benzenesulfonic acids and benzenesulfon...

...ethylphenylamino)methyl] benzenesulfonic acid and 2-[(ethylphenylamino)methyl] benzenesulfonic acid to form the leuco base. The leuco base is then oxidized with lead dioxide and acid, or with dichromate and acid,...

... Benzenesulfonic acid, 2,2â...5-triazin-2-yl]amino]-, sodium salt... Benzenesulfonic acid, 2,2�-(1...5-triazin-2-yl]amino]-, sodium salt...a benzenesulfonic acid, 2,2�-(1...5-triazin-2-yl]amino]-, sodium...

... Benzenesulfonic acid, 2,2â...5-triazin-2-yl) amino]-, disodium salt... Benzenesulfonic acid, 2,2�-(1...5-triazin-2-yl) amino]-, disodium salt...a benzenesulfonic acid, 2,2�-(1...5-triazin-2-yl)amino]-,...

An enzyme desulfonating anionic alkyl benzene sulfonate (ABS) surfactants was isolated from Pseudomonas alcaligenes TR and purified. The physicochemical and catalytic characteristics of the enzyme were studied. The kinetic constants of ABS desulfonation were determined and shown to depend on the length of a hydrocarbon radical. The ...

Progress toward a highly convergent, asymmetric synthesis of brevenal is reported. Construction of the AB-ring and E-ring cyclic ether fragments was achieved through asymmetric alkylation/ring-closing metathesis strategies. A Horner-Wadsworth-Emmons olefination was used in a key bond-forming step to couple the advanced cyclic fragments and enable rapid ...

Organic/inorganic nanocomposites have been the subject of considerable interest because of their unique properties such as mechanical and electrical properties. A great deal of research on the conducting polymer/inorganic clay nanocomposites, particularly composed of polyaniline (PANI) and inorganic clay, has been carried out. However, in the case of the PANI/inorganic clay nanocomposites prepared ...

ABS>The chain alkylation of acetylene with propane to yield predominantly 3-methyl-1-butene is reported. This reaction is initiated by mixed pile nuclear radiation at 10 to 15 atm pressure and 250 to 400 deg . At these conditions, it has a chain length which varies between 7 and 12 and increases inversely with the square rcot of intensity. ...

Ab initio and DFT calculations were performed to examine the mechanisms of reduction of alkyl halides and formaldehyde by borane. With alkyl halides, the optimized transition structure geometry resembled diborane, with a pair of hydrogen atoms bridging the boron and carbon atoms by three-center-two-electron bonds. A similar transition ...

We have carried out a series of ab-initio calculations to investigate changes in the optical properties of Si quantum dots as a function of surface passivation. In particular, we have compared hydrogen passivated dots with those having alkyl groups at the surface. We find that, while on clusters with reconstructed surfaces a complete ...