Sodium dodecyl benzenesulfonate

In the presence of an anionic surfactant such as sodium dodecyl-benzenesulfonate [25155-30-0] any protonated amine salt present forms an insoluble salt (4). Salt formation results in an increase in the pH of the solution. 

The lower limit of detection is 1 p.g/dm for sodium hexadecyl sulfonate, 2.5 p.g/dm for sodium dodecyl benzenesulfonate and 10 p.g/diW for sodium dodecyl sulfonate with sample volume of O.ldiW. The method proposed is highly sensitive, simple, rapid and guarantees environmental safety of analysis. 

SDBS = sodium dodecyl benzenesulfonate SDS = sodium dodecyl sulfate TEG =triethylene glycol TEOS = tetraethyl orthosilicate TOA = trioctylamine ... 

It is preferable to use either sodium dodecyl benzenesulfonate or sodium lauryl sulfate (the latter is preferred). 

Interactions of ofloxacin and levofloxacin with Al3+, Fe3+, and Mg2+ ions were investigated by capillary zone electrophoresis (07CHR489). A fluorescence enhancement phenomenon in the europium-ofloxacin-sodium dodecyl benzenesulfonate fluorescence system was observed when Gd3+ was added (07JFL105). A quantitative relation was found between the relative fluorescences of Zr, Mo, and V chelates of ofloxacin and the ionization of the carboxylic group and the calculated stability constants of the formed chelates (06MI34). Factors that significantly influence the stability of ofloxacin- and levofloxacin-metal (Al3+, Fe3+, Cu2+,... 

Membrane fouling due to adsorption of polyelectrolytes (such as humic acids, surfactants, and proteins) may severely reduce ion permeability, especially in the anion-exchange membranes. However, exhausted anion-exchange membranes used in the ED of molasses, whey, citric acid, or sodium dodecyl-benzenesulfonate can be reactivated by circulating simultaneously an acidic solution in one compartment and an alkaline solution in the other one, both solutions at titres greater than 0.1 kmol/m3 (Tokuyama Soda Co., 1983). 

In this context also, the electrochemical oxidation was proposed as effective process of wastewater treatment. Among surfactants, sodium dodecyl benzenesulfonate is generally assumed to represent anionic surfactants, whereas hexadecyltrimethy-lammonium chloride is assumed as representing the cationic class. 

Oxidation of sulphuric solutions of anionic surfactants was considered by Panizza and co-workers (Panizza et al. 2005) which compared the performance of ternary Ti-Ru-Sn oxide and BDD electrodes during oxidative treatment of synthetic and real wastewater containing sodium dodecyl benzenesulfonate. The authors demonstrated that the anionic surfactant was mineralised at active Ti-Ru-Sn electrodes only when a certain amount of chlorides were added to the solution. The process mainly occurred in homogeneous reaction by means of the oxidant species originated by chlorides, since it was not influenced by the stirring velocity of the solution. 

The procedure is simple. The first addition of AN and fuel (urea or hexamine) and the "Tide" (sodium dodecyl benzenesulfonate) are powdered and mixed together. These are placed in a stainless steel pan. A candy thermometer is placed in the mixture so that it will go completely to the bottom of the mixture. The container is then place on a heat source that is easily and accurately controlled (e.g. electric hot plate). This is heated slowly until it begins to melt (100 degrees C. urea, 170 degrees C. Hexamine). This is where the danger lies. At this... 

The role of the surfactant was further studied in sonochemical reduction [20, 21] processes of Pt (IV) ions in water. It was investigated in the presence of various kinds of surfactants such as sodium dodecylsulfate (SDS) and sodium dodecyl-benzenesulfonate (DBS) as anionic surfactants, polyethylene glycol monostearate (PEG-MS) as non-ionic, and dodecyltrrmethylammonium chloride (DTAG) and bromide (DTAB) as cationic surfactants. An improved colorimetric determination reveals that Pt (IV) ion is reduced to zero-valent metal in two steps step (1) Pt (IV) ion to Pt (II) ion, and step (2) Pt (II) ion to Pt (0), and after the completion of step (1), step (2) sets in. 

Interactions between oppositely charged micelles in aqueous solutions spontaneously form vesicles. The self-diffusion coefficient of water and 2H relaxation of 2H-labeled dodecyl trimethyl ammonium chloride of the dodecyl trimethyl ammonium chloride-sodium dodecyl benzenesulfonate systems show that in these mixtures there is limited growth of the micelles with changes in composition. The vesicles abruptly begin to form at a characteristic mixing ratio of the two surfactants. The transition is continuous.205 Transformation from micelle to vesicle in dodecyl trimethyl ammonium chloride-sodium perfluoro-nonanoate aqueous solution has been studied by self-diffusion coefficient measurements, and it was found that at a concentration of 35 wt% with a molar ratio of 1 1, the self-diffusion coefficient of the mixed micelles is far smaller than that of the two individual micelles.206 The characteristics of mixed surfactant... 

SDDBS and AOT denote the anionic surfactants sodium dodecyl-benzenesulfonate and sodium dioctyl-sulfosuccinate, respectively. Triton X-100 is the nonionic surfactant nonylphenol decafethylene-glycolether). Compound 1 is a mixture of sihcone oil and hydropho-bized silica Compound 2 is an emulsion of Compound 1, which contains also solid particles of Span 60. Data from References 684 and 687. 

Norfox KD. See Cocamide DEA Norfox KO. See Potassium oleate Norfox LAS-99. See Sodium dodecyl benzenesulfonate Norfox MCS. See,Methyl cottonseed Norfox MLD. See Methyl lardate Norfox MLS. See Magnesium lauryl sulfate Norfox MOL. See. Methyl oleate Norfox MST. See Methyl stearate Norfox MSY. See Methyl soyate Norfox MTL. See Methyl tallowate Norfox NBC. See Methoxyisopropanol Norfox NP-1. See Nonoxynol-1 Norfox NP-4. See Nonoxynol-4 Norfox NP-6. See Nonoxynol-6 Norfox NP-7. See Nonoxynol-7 Norfox NP-9. See Nonoxynol-9 Norfox NP-12. See Nonoxynol-12 Norfox Oleic Flakes. See Sodium oleate Norfox OP-45. See Octoxynol-5 Norfox OP-100. See Octoxynol-10 Norfox OP-102. See Octoxynol-12 Norfox OP-114. See Octoxynol Norfox PEA-N. See Cocamide DEA Norfox SENS. See Sodium 2-ethylhexyl sulfate... 

Phenyl Sulphonate HFCA. See Calcium dodecylbenzene sulfonate Phenyl Sulphonate HSR. See Sodium dodecyl benzenesulfonate 5-Phenyltetrazole CAS 3999-10-8 Empirical C7H6N4 Formula HNN=NN=C(C6H5)... 

Rhodacal DDB-40. See Sodium dodecyl benzenesulfonate Rhodacal DDB 60T, Rhodacal DOV. See TEA-dodecylbenzenesulfonate Rhodacal DS-4, Rhodacal DS/4-E25, Rhodacal DS-10. See Sodium dodecylbenzenesulfonate Rhodacal DSB, Rhodacal DSB-85. See Sodium dodecyl diphenyloxide disulfonate Rhodacal IN. See Sodium isopropyl naphthalene sulfonate Rhodacal IPAM. See Isopropylamine dodecylbenzenesulfonate Rhodacal LA Acid. See Dodecylbenzenesulfonic acid Rhodacal LDS-10, Rhodacal LDS-22. See Sodium dodecylbenzenesulfonate Rhodacal Liquid, Rhodacal N. See Sodium polynaphthalene sulfonate Rhodacal RM/77-D. See Sodium dinaphthalene methane sulfonate Rhodacal RM/210. See Sodium methyinaphthalenesulfonate Rhodacal T. See TEA-dodecylbenzenesulfonate Rhodacol UHF. See Calcium dodecyl benzene sulfonate... 

Benzoic acids (BAs), and their respective sodium, potassium, and calcium salts are the most commonly used preservatives in foodstuffs. Most often high-pressure liquid chromatography (HPLC) methods [71] are used for the determination of benzoates in food and beverage products. Several attempts have been made [72, 73] for developing the benzoate-selective electrode as a sensor applicable in a simple cost-effective measuring procedure. Alizadeh et al. [74] developed a solid contact electrode on a platinum-based sensing element. For the preparation of the selective benzoate measuring film, pyrrole was electropolymerized in the presence of sodium benzoate and sodium dodecyl benzenesulfonate. The slope of the calibration curve of the electrode was 55.4mV/decade in the benzoate concentration... 

In the presence of sodium dodecyl benzenesulfonate the coupling of commercial 9-(2-hydroxyethyl)carbazole with 4-cyanobenzenediazonium chloride in biphasic medium (H2O-CH2CI2) give (4-cyano phenyl)-[3-[9-(2-hydroxyethyl)carbazolyl]] diazene [HECA] [66]. 

Co(N03)2, 4H2O (3.44 mmol, 0.8770 g) was dissolved in 22.0 mL n )ctanol to form a red solution, and then 8.58 mmol (3.3 sodium dodecyl benzenesulfonate (SDBS) was added into the solution under magnetic stirring for 5 min, resulting in a brown solution [370]. The obtained solution was heated at 90 C for 6 h and then transferred into an 180 °C oven for a designated time. After that, the autoclave was allowed to cool to room temperature. The 20-mL black Uquid was extracted with a mixture of 15 mL of cyclohexane, 10 mL of absolute ethanol, and 25 mL of deionized water. After the water phase was discarded, another 10 mL of absolute ethanol and 25 mL of deionized water was added to the oil phase. The extraction was repeated three or more times, till the oil phase about 15 mL was a transparent deep brown color. When 15 mL of methanol was added to the oil phase, a black powder precipitate was obtained. The black powder was separated by centrifugation at 6000 rpm for 10 minutes, washed with methanol for three times, and then dried at 100 C for 1 h. 

The increase in the concentration of tetra-n-butylammonium bromide (n-Bu4NBr) from 0.0 to 6.0 x 1(T M decreased CMC of aqueous solution of sodium dodecyl benzenesulfonate (SDBS) from 2.5 x 10" to 4.7 x 10 M (Table 1.5). These observed data fit reasonably well to Equation 1.2 where X = [n-Bu4NBr]. The calculated values of CMCq and 0 are summarized in Table 1.6. The value of CMCq is not significantly different from the experimentally determined CMC... 

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