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Artykuły w czasopismach na temat „Sodium sulfonates”

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Data publikacji: 4 czerwca 2021

Data aktualizacji: 20 lutego 2023

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1

Bindu Nair. "Final Report On the Safety Assessment of Sodium Alpha-Olefin Sulfonates". International Journal of Toxicology 17, nr 5_suppl (październik 1998): 39–65. http://dx.doi.org/10.1177/109158189801700504.

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Sodium C14-16 OlefinSulfonate, Sodium C12-14 Olefin Sulfonate, Sodium C 14-18 Olefin Sulfonate, and Sodium C16-18 Olefin Sulfonate are the Sodium α-Olefin Sulfonates used in cosmetics as surfactant-cleansing agents. The highest concentration reportedly is 16% in shampoos and bath and shower products. These ingredients are a mixture of long-chain sulfonate salts prepared by sulfonation of α-olefins of various carbon chain lengths noted as subscripts. In the manufacture of these ingredients, delta and gamma sultones may be produced. Sodium α-Olefin Sulfonates are poorly absorbed through normal skin, but are significantly absorbed through damaged skin. Acute oral LD50 values were 1.3 2.4g/kg in rats and 2.5-4.3 g/kg in mice. Short-term toxicity studies using rats showed no consistent effects, even with exposures in the 0.5-1.0 g/kg range. Concentrations above 10% produced moderate ocular irritation and a concentration of 5% produced mild ocular irritation in rabbits. In reproductive and developmental toxicity studies, fetal abnormalities were noted, but only at doses that were maternally toxic. Genotoxicity data were mostly negative and oral and dermal carcinogenicity studies were negative. Various animal and clinical studies found irritation and sensitization. Sensitization was attributed to low level gamma sultone residues. Because gamma sultones are demonstrated sensitizers at very low levels, it was concluded that any product containing Sodium α-Olefin Sulfonates should have very little gamma sultone residues. The gamma sultone levels should not exceed 10 ppm for saturated (alkane) sultones, 1 ppm for chloro-sultones, and 0.1 ppm for unsaturated sultones. Sodium α-Olefin Sulfonates are otherwise considered safe for use in rinse-off products. Based on concerns about irritation, were Sodium α-Olefin Sulfonates to be used in leave-on products, it was concluded that concentrations should not exceed 2% for such uses.

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2

Johnson, MD, i VC Reinsborough. "Binding Constants for Cyclodextrin Inclusions by Competitive Spectrofluorometry Involving 6-(p-Toluidino)naphthalene-2-sulfonate". Australian Journal of Chemistry 45, nr 12 (1992): 1961. http://dx.doi.org/10.1071/ch9921961.

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Binding constants of derivatized and simple β-cyclodextrins with a variety of inclusates were determined spectrofluorometrically through competition with 6-(p- toluidino )naphthalene- 2-sulfonate ( tns ). Inclusates in addition to tns were sodium alkane-1-sulfonates, sodium tetraphenylborate, sodium tetrafluoroborate, pyrazine and 4,4'-bipyridine.

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3

Ioannou, Panayiotis V., i Gerasimos M. Tsivgoulis. "Preparation of (mono)sulfonates: Suitable precursors for unnatural sulfonolipids". Main Group Chemistry 20, nr 2 (22.07.2021): 103–18. http://dx.doi.org/10.3233/mgc-210014.

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Aiming at the preparation of the novel unnatural, non-isosteric sulfonolipids bearing one, two and three acyl groups 8, 9 and 10, their precursors hydroxyl-containing sulfonates have been prepared from a variety of hydroxyl-containing halogenides and epoxides using the Strecker reaction. Thus, the sulfonates 16 and 22 were prepared pure, while the sulfonate 27 could only be prepared as a by-product using 1,4-dibromo-2,3-butanediol 26 and in low yields. For these reactions, probable pathways leading to the isolated or spectroscopically identified products are proposed. Conclusions about the relative nucleophilicity of SO32- compared to AsO33 - (as well as HO- which is present in their aqueous solutions) were drawn based on the yields of the corresponding arsonic acids and sodium sulfonates. The IR (KBr) and 1H NMR (D2O) spectra of sulfonates (and in some cases of their sulfonic acids) are analyzed and discussed.

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4

Cheng, Tingting, Lan Xu i Mingdi Wang. "Effect of surface active agent on bubble-electrospun polyacrylonitrile nanofibers". Thermal Science 23, nr 4 (2019): 2481–87. http://dx.doi.org/10.2298/tsci1904481c.

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Sodium dodecyl benzene sulfonates were used as a surfactant to obtain polyacrylonitrile nanofibers by a modified bubble-electrospinning using a copper cone-shaped air nozzle. The properties of the electrospun solutions were investigated using viscosity meter, conductivity meter and rheometer, and the effects of sodium dodecyl benzene sulfonates concentration on the morphology, mechanical property and production of polyacrylonitrile nanofibers were studied. The results showed the addition of sodium dodecyl benzene sulfonates could effectively decrease the viscosity of the solution, increase the electric conductivity of the solution, and promote the generation of bubbles, which resulted in enhancing tensile strength and decreasing the production of nanofibers.

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5

Kuehne, D. L., i D. W. Shaw. "Manual and Automated Turbidimetric Methods for the Determination of Polyacrylamides in the Presence of Sulfonates". Society of Petroleum Engineers Journal 25, nr 05 (1.10.1985): 687–92. http://dx.doi.org/10.2118/11784-pa.

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Abstract Polymers and sulfonates are often part of the multicomponent chemical systems designed to increase oil recovery from depleted reservoirs. The objective of this work was to develop reliable, analytical methods for measuring polyacrylamide concentration in the presence of sulfonates. The need for new or improved methods arose because petroleum sulfonates caused interference with the standard turbidimetric method for determining polyacrylamides. This interference was eliminated by the addition of a butanol-extraction step to remove sulfonates. Based on the new manual procedure, an automated method was developed for use with a Technicon AutoAnalyzer™ to reduce analysis time. The automated method was designed with four modes of operation to cover high and low polymer concentrations with and without sulfonates present in the samples. Polymer concentrations ranging from 10 to a maximum of 1,200 wt ppm [10 to 1200 mg/kg] can be measured. A unique feature of the automated method is the continuous-flow solvent extraction. Depending on the mode, AutoAnalyzer throughput is 20 or 30 samples per hour. The accuracy of the results is 5% with extraction and 1% without extraction. Introduction Polyacrylamide polymers are used for mobility control and profile modification in EOR processes. Rapid and accurate analytical methods are needed for laboratory studies of polymer behavior and for the determination of polymer concentration in field samples. Procedures1,2 based on the turbidimetric reaction of polyacrylamide with bleach (sodium hypochlorite) are commonly used to measure the concentration of polyacrylamide in aqueous samples. In the attempt to apply these procedures to micellar solutions containing polymer, it was found that petroleum sulfonates cause interference because of both their inherent color and unknown reactions with bleach. Two different analytical methods were examined briefly. The starch-triiodide method developed by Scoggins and Miller3 also suffered from petroleum sulfonate interference. An automated method4 involving polymer hydrolysis followed by colorimetric determination of the liberated ammonia worked well with low concentrations of sulfonates. However, any free ammonia or ammonium ions in solution caused a substantial background response. For some of the emulsion-type polyacrylamides, the background response from ammonia in the product was much greater than the polymer response. Efforts to eliminate interferences were focused on the turbidimetric method because it was the easiest to use. Solvent extraction was selected as the best approach to remove petroleum sulfonates and oil from aqueous polymer samples. The requirements for a good solvent were that it remove the interfering components, separate rapidly from the aqueous phase, and have low water solubility. A series of alcohols and other solvents were tested; 1-butanol was found to be the most effective. Therefore, a butanol-extraction step was added to the standard turbidimetric method. Based on this new manual procedure, an automated method was developed for use with an AutoAnalyzer II (Technicon Industrial Systems). Both the manual and automated methods can be run with or without butanol extraction, depending on the type of samples. Manual Method In the turbidimetric method, polyacrylamide polymer reacts with sodium hypochlorite in acetic acid to form an insoluble chloroamide. The resulting turbidity is proportional to polymer concentration and can be measured with a spectrophotometer or turbidimeter. If petroleum sulfonates are present in the samples, they are extracted with 1-butanol that is acidified with HCl. The HCl is necessary to change the sulfonates into sulfonic acids, so that they can be extracted easily. To prevent excess HCl from interfering with the polyacrylamide reaction, the glacial acetic acid is buffered with sodium acetate.

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6

Kassanova, A. Zh, M. T. Yestayeva i M. O. Turtubayeva. "Arenediazonium sulfonates: synthesis, comparison of structural and physicochemical properties". Bulletin of the Karaganda University. "Chemistry" series 105, nr 1 (30.03.2022): 25–38. http://dx.doi.org/10.31489/2022ch1/25-38.

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Aromatic diazonium salts are important building blocks in organic synthesis. The present review is concerned with such aromatic diazonium sulfonates as tosylates, dodecylbenzenesulfonates, triflates, camphorsulfonates, silica sulfates. The first part of the review provides information on the synthesis and application of these diazonium salts. It is shown that these diazonium compounds are easily synthesized by diazotization of anilines with sodium nitrite or alkyl nitrites in the presence of corresponding sulfonic acids with high yields. These diazonium salts have found wide application in the synthesis of aromatic azides, halides, triazenes, azo dyes, stilbenes, biaryls, etc. The second part of the article presents information on the comparison of the results of X-ray analysis, infrared spectroscopy and thermal analysis. The structure of diazonium sulfonate salts corresponds to the structure of classical diazonium salts (chlorides, sulfates, tetrafluoroborates). A significant difference between arenediazonium sulfonates and other diazonium salts is their explosion safety and stability in an individual form. Arenediazonium tosylates, triflates and camphorasulfonates are easily soluble both in water and in polar organic solvents. Arenediazonium dodecylbenzenesulfonates are soluble in nonpolar organic media. These features of sulfonate salts are paramount for distinguishing characteristics of the effect of the acid anion on the stability, solubility and reactivity of diazonium salts.

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7

Bilyalov, Alisher A., Mikhail A. Gavrilenko i Nataliya A. Gavrilenko. "2-NSA, 1,5-NDSA Application and Sodium Naphtionate as Fluorescent Indicators at Oil Field". Advanced Materials Research 1040 (wrzesień 2014): 259–62. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.259.

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Set of polyaromatic sulfonates for tracer analysis of oil field as a result of fluorescent spectra study is recommended. Simultaneous determination of fluorescent polyaromatic sulfonates is confirmed by the applicability and reproducibility of the fluorescent method.

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8

Budhram, R. S., i E. J. Eisenbraun. "Synthesis and rigorous purification of sodium alkylbenzene sulfonates". Journal of the American Oil Chemists’ Society 63, nr 10 (październik 1986): 1392–94. http://dx.doi.org/10.1007/bf02679609.

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9

Mazal, Ctibor, Věra Rothová i Jaroslav Jonas. "Sodium salt, sulfonates and carboxylates of (E)- and (Z)-3-(hydroxymethylene)-5-methyldihydro-2(3H)-furanone". Collection of Czechoslovak Chemical Communications 50, nr 2 (1985): 348–56. http://dx.doi.org/10.1135/cccc19850348.

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In the solid state, sodium salt of 3-(hydroxymethylene)-5-methyldihydro-2(3H)-furanone can be prepared in the form of the (Z)-isomer, (E)-isomer or as a mixture of both isomers; in solutions the salt exists exclusively as the (E)-isomer. Reaction of the corresponding isomers of this sodium salt with sulfonyl or acyl chlorides afforded sulfonates or carboxylates derived from (E)- or (Z)-3-(hydroxymethylene)-5-methyldihydro-2(3H)-furanone. Configurations of the obtained isomeric sulfonates and carboxylates were confirmed by their 1H and 13C NMR spectra. Dihedral angles, calculated from the observed coupling constants, were used in the discussion of preferred conformation of the prepared compounds.

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10

Vignola, Nicola, Stefan Dahmen, Dieter Enders i Stefan Bräse. "Synthesis of alkyl sulfonates from sulfonic acids or sodium sulfonates using solid-phase bound reagents". Tetrahedron Letters 42, nr 44 (październik 2001): 7833–36. http://dx.doi.org/10.1016/s0040-4039(01)01683-5.

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11

Kaida, Huda, Mohd Arif Syed, Mohd Yunus Shukor i Ahmad Razi Othman. "Biodegradation of Linear Alkylbenzene Sulfonates (LAS): A Mini Review". Bioremediation Science and Technology Research 9, nr 1 (31.07.2021): 1–6. http://dx.doi.org/10.54987/bstr.v9i1.590.

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The most common anionic surfactants in the formulation of detergents are Linear Alkylbenzene Sulfonates (LAS), with an anionic sulfonate head group and a hydrophobic alkylbenzene tail group. The two primary synthetic detergents, together with sodium laureth sulphate, have been around for quite some time and may be found in many personal-care items such as shampoos, soaps, toothpaste, and laundry detergent. LAS is a relatively recalcitrant compound and not easily biodegraded. It is a major source of environmental contamination. Bioremediation can potentially give a significantly higher removal efficiency than standard physicochemical techniques. This review aims to compile information on the toxicity, biodegradation and assimilatory pathway of this class of compound. One of the challenges in the bioremediation of this class of compound is that there have been limited SDBS-degrading bacteria isolated and characterized to date and further work in the field of bioremediation should focus on the isolation of more degraders and carrying out further trials with micro-and mesocosms.

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12

Bai, Ruijiao, Richeng Zhang, Haofei Qi, Xilong Yan i Ligong Chen. "Preparation of Sodium Sulfonates Using by Copper as Catalyst". Asian Journal of Chemistry 26, nr 21 (2014): 7226–28. http://dx.doi.org/10.14233/ajchem.2014.16579.

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13

YANAGISAWA, TAKASHI, SHUICHI WAKABAYASHI, TSUYOSHI TOMIYAMA, MASAFUMI YASUNAMI i KAHEI TAKASE. "Synthesis and anti-ulcer activities of sodium alkylazulene sulfonates." CHEMICAL & PHARMACEUTICAL BULLETIN 36, nr 2 (1988): 641–47. http://dx.doi.org/10.1248/cpb.36.641.

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14

Zhu, Sha, Bin-Bin Wang, Mei-Chen Tan, Xiaofu Qian, Shengneng Ying, Yang Liu, Cehua Li, Zheng Jin, Hongmei Jiang i Qing-Wen Gui. "Ultrasound Accelerated Expedient and Eco-Friendly Synthesis of Aryl Sulfonates Using I2 As Catalyst At Ambient Conditions". Letters in Organic Chemistry 19, nr 4 (kwiecień 2022): 293–97. http://dx.doi.org/10.2174/1570178618666210929124259.

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: Aryl sulfonates were developed by ssing an energy-saving and eco-friendly approach, through ultrasound-assisted coupling reaction of readily sodium sulfinates with N-hydroxyphthalimide, under metal-free and mild conditions within 10 min at room temperature.

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15

Wang, Li-Jing, Manman Chen, Lin Qi, Zhidong Xu i Wei Li. "Copper-mediated oxysulfonylation of alkenyl oximes with sodium sulfinates: a facile synthesis of isoxazolines featuring a sulfone substituent". Chemical Communications 53, nr 12 (2017): 2056–59. http://dx.doi.org/10.1039/c7cc00090a.

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A novel and efficient Cu(OAc)₂-mediated oxysulfonylation of alkenyl oximes with sodium sulfonates was developed. The reactions are easy to conduct, occur under mild conditions, and form a broad range of sulfone-substituted isoxazolines in good yields.

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16

Baum, James Clayton, Kathleen Anne Durkin, Laura Precedo, Stacy Brian O'blenes, John Edward Goehl, Richard Francis Langler, Gerald Kendall MacCormack i Lana Louise Smith. "Sulfonyl esters 3. The formation of sulfone-sulfonates in the reactions of aryl methanesulfonates with sodium hydride". Canadian Journal of Chemistry 69, nr 12 (1.12.1991): 2127–35. http://dx.doi.org/10.1139/v91-307.

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Sodium hydride reductions of aryl methanesulfonates afford dimeric sulfone-sulfonate esters as well as products arising from SO bond rupture. SO bond rupture becomes more competitive as the LUMO energy of the sulfonate ester declines. Exploration of the chemistry of a sulfone-sulfonate ester revealed a complex novel reaction that resulted in the formation of, inter alia, a dichloromethanesulfonate ester and a trichloromethanesulfonate ester. The first successful approaches to the synthesis of the heretofore unknown trichloromethanesulfonates and dichloromethanesulfonates are reported. Key words: sodium hydride reductions, sulfenes, sulfone-sulfonate esters

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17

Caron, Gaston, Gérald Perron, Marc Lindheimer i Jacques E. Desnoyers. "Heat capacities and volumes of sodium alkylbenzene sulfonates in water". Journal of Colloid and Interface Science 106, nr 2 (sierpień 1985): 324–33. http://dx.doi.org/10.1016/s0021-9797(85)80006-0.

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18

Granet, R., i S. Piekarski. "Surface and micellar properties of sodium 1-alkyl decane sulfonates". Colloids and Surfaces 33 (styczeń 1988): 321–36. http://dx.doi.org/10.1016/0166-6622(88)80071-4.

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19

Imran Din, Muhammad, Faria Rafique, Muhammad Sadaf Hussain, Hafiz Arslan Mehmood i Sadia Waseem. "Recent developments in the synthesis and stability of metal ferrite nanoparticles". Science Progress 102, nr 1 (marzec 2019): 61–72. http://dx.doi.org/10.1177/0036850419826799.

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This article presents a comprehensive review on the synthesis and stability of ferrite nanoparticles such as nickel ferrite (NiFe2O4), zinc ferrite (ZnFe2O4), manganese ferrite (MnFe2O4), iron ferrite (Fe2O3), cobalt ferrite (CoFe2O4) and also mixed nanoparticles. Different synthetic methods for ferrite nanoparticles have been reviewed such as co-precipitation, thermal decomposition and hydrothermal, microwave-assisted and sonochemical methods. The effect on the stability of different capping agents like canola oil, glycerol, sodium dodecyl, sodium citrate, oleic acid, Triton-100 and sodium dodecyl benzene sulfonates has also been studied.

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20

Janik, R., i S. Kucharski. "Synthese von 3-n-Alkylthiophenen und ihrer Na-Sulfonate/ Synthesis of 3-n-Alkylthiophenes and their Sodium Sulfonates". Tenside Surfactants Detergents 30, nr 5 (1.09.1993): 310–14. http://dx.doi.org/10.1515/tsd-1993-300506.

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21

Berna, J. L., C. Bengoechea, A. Moreno i R. S. Rounds. "Evaluation of the rheological properties of sulfonic acids and sodium sulfonates". Journal of Surfactants and Detergents 3, nr 3 (lipiec 2000): 353–59. http://dx.doi.org/10.1007/s11743-000-0139-7.

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22

KUCHARSKI, S., R. JANIK i M. WIELOWSKI. "ChemInform Abstract: Synthesis of 1-n-Alkylpyrroles and Their Sodium Sulfonates." ChemInform 25, nr 22 (19.08.2010): no. http://dx.doi.org/10.1002/chin.199422132.

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23

Ádám, Adél Anna, Szilveszter Ziegenheim, László Janovák, Márton Szabados, Csaba Bús, Ákos Kukovecz, Zoltán Kónya, Imre Dékány, Pál Sipos i Bence Kutus. "Binding of Ca2+ Ions to Alkylbenzene Sulfonates: Micelle Formation, Second Critical Concentration and Precipitation". Materials 16, nr 2 (4.01.2023): 494. http://dx.doi.org/10.3390/ma16020494.

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Anionic surfactants, such as sodium linear alkylbenzene sulfonates (NaLAS), are utilized in various fields, including industry, household, and agriculture. The efficiency of their use in aqueous environments is significantly affected by the presence of cations, Ca2+ and Mg2+ in particular, as they can decrease the concentration of the surfactant due to precipitation. To understand cation–sulfonate interactions better, we study both NaLAS colloidal solutions in the presence of CaCl2 and precipitates forming at higher salt concentrations. Upon addition of CaCl2, we find the surface tension and critical micelle concentration of NaLAS to decrease significantly, in line with earlier findings for alkylbenzylsulfonates in the presence of divalent cations. Strikingly, an increase in the surface tension is discernible above 0.6 g L–1 NaLAS, accompanied by the decrease of apparent micelle sizes, which in turn gives rise to transparent systems. Thus, there appears to be a second critical concentration indicating another micellar equilibrium. Furthermore, the maximum salt tolerance of the surfactant is 0.1 g L–1 Ca2+, above which rapid precipitation occurs yielding sparingly soluble CaLAS2∙2H2O.

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24

Deruer, Elsa, Vincent Hamel, Samuel Blais i Sylvain Canesi. "Rapid transformation of sulfinate salts into sulfonates promoted by a hypervalent iodine(III) reagent". Beilstein Journal of Organic Chemistry 14 (24.05.2018): 1203–7. http://dx.doi.org/10.3762/bjoc.14.101.

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An alternative method for forming sulfonates through hypervalent iodine(III) reagent-mediated oxidation of sodium sulfinates has been developed. This transformation involves trapping reactive sulfonium species using alcohols. With additional optimization of the reaction conditions, the method appears extendable to other nucleophiles such as electron-rich aromatic systems or cyclic ethers through a ring opening pathway.

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25

Mazal, Ctibor, i Jaroslav Jonas. "Nucleophilic Vinylic Substitution on α-Tosyloxymethylene Lactones". Collection of Czechoslovak Chemical Communications 58, nr 7 (1993): 1607–23. http://dx.doi.org/10.1135/cccc19931607.

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Sodium salt of 3-hydroxymethylenetetrahydro-2H-pyran-2-one (V), obtained by Claisen condensation of δ-valerolactone with ethyl formate, was converted into its sulfonates and carboxylates IV, VII - X, which were obtained either as pure E-isomers or as mixtures of E- and Z-isomers; the mixtures were chromatographically separated. Substitution reaction of α-tosyloxymethylene lactones II, III and IV with aromatic thiols, azide anion, secondary amines and sodium enolates XI, XII and V was studied. The stereochemical outcome of this substitution is discussed from the viewpoint of mechanism of nucleophilic vinylic substitution (SNV).

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26

Wang, Fei, Amy E. Warren, Cheryl R. Barnes i Iris H. Hall. "Cytotoxicity of Poly(Phenolic)Sulfonates and Their Sodium Salts in L1210 Lymphoid Leukemia Cells". Metal-Based Drugs 5, nr 3 (1.01.1998): 147–60. http://dx.doi.org/10.1155/mbd.1998.147.

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Poly(phenolic)-sulfonates demonstrated very good cytotoxicity against the growth of tumor cell lines (L1210, Tmolt-3, HeLa-S3) and are comparable in potency with typical clinically used anticancer drugs. Four of the most active compounds, i.e. GL-2021, GL-2029, GL-2041 and GL-2063, were selected for a mode of action study in L1210 lymphoid leukemia cells at concentration of 25μM to 100μM for 60 min. The agents did not alkylate bases of ct-DNA, cause intercalation between base pairs, produce cross linking of ct-DNA strands or generate free radicals although L1210 DNA fragmentation was observed after 24 hr incubation. L1210 DNA synthesis was preferentially inhibited which was achieved by (1) suppressing DNA polymerase α activity which reduced the synthesis of new strands of DNA, (2) reducing of de novo purine synthesis at the regulatory enzyme PRPP amido transferase which reduced d(GMP) levels, and (3) inhibiting of nucleoside kinase activities which further reduced DNA synthesis. DNA template activity was altered by the poly(phenolic)sulfonates since they reduced DNA polymerase α and m-RNA and t-RNA polymerase activities. The kinetic studies at 50 μM over 2 hr demonstrated that the agents’ effect on PRPP-amido transferase activity is probably a major target of the compounds.

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27

Hall, Iris H., Margaret E. Murphy i Amy L. Elkins. "Anti-Inflammatory Activity of (Polyphenolic)-Sulfonates and Their Sodium Salts in Rodents". Metal-Based Drugs 5, nr 2 (1.01.1998): 67–75. http://dx.doi.org/10.1155/mbd.1998.67.

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A series of polyphenolic-sulfonated compounds were observed to have potent anti-inflammatory activity and were protective against induced endotoxic shock in mice at 8 and 16 mg/kg, I.P. These agents proved to be potent elastase inhibitors in human leukocytes and J774-AI and IC-21 mouse macrophages as well as prostaglandin cyclo-oxygenase inhibitors in J774-AI macrophages. The compounds from 5 to 50 μM inhibited TNFα release from IC-21 macrophages and IL-1 release from mouse P388D1 macrophages induced by LPS. The binding of these cytokines to high affinity receptors on target cells, e.g. L929 fibroblasts and IL-2 in HuT78 T lymphoma cells, were also suppressed by the agents. These compounds blocked the adhesion of leukocytes and macrophages to the plasma membranes of L929 fibroblasts.

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28

Granet, Robert, i Salomon Piekarski. "Tension superficielle et micellisation d'alkyl sulfonates de sodium à deux chaînes égales". Journal de Chimie Physique 83 (1986): 131–36. http://dx.doi.org/10.1051/jcp/1986830131.

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29

Alapafuja, Shakiru O., Spyros P. Nikas, Vidyanand G. Shukla, Ioannis Papanastasiou i Alexandros Makriyannis. "Microwave-assisted synthesis of sodium sulfonates precursors of sulfonyl chlorides and fluorides". Tetrahedron Letters 50, nr 50 (grudzień 2009): 7028–31. http://dx.doi.org/10.1016/j.tetlet.2009.09.167.

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30

Becker, Lillian C., Wilma F. Bergfeld, Donald V. Belsito, Ronald A. Hill, Curtis D. Klaassen, Daniel C. Liebler, James G. Marks i in. "Amended Safety Assessment of Dodecylbenzenesulfonate, Decylbenzenesulfonate, and Tridecylbenzenesulfonate Salts as Used in Cosmetics". International Journal of Toxicology 29, nr 6_suppl (listopad 2010): 288S—305S. http://dx.doi.org/10.1177/1091581810386124.

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Sodium dodecylbenzenesulfonate is one of a group of salts of alkylbenzene sulfonates used in cosmetics as surfactant-cleansing agents. Sodium dodecylbenzenesulfonate is soluble in water and partially soluble in alcohol, with dermal absorption dependent on pH. Dodecylbenzenesulfonate salts are not toxic in single-dose oral and dermal animal tests, and no systemic toxicities were observed in repeat-dose dermal animal studies. In dermal animal studies, no evidence of reproductive or developmental toxicity was reported. At 15% concentrations, sodium dodecylbenzenesulfonate was severely irritating to rabbit skin. The Cosmetic Ingredient Review Expert Panel concluded that the irritant properties of these ingredients are similar to those of other detergents, with severity dependent on concentration and pH. Products containing these ingredients should be formulated to ensure that the irritancy potential is minimized.

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Rossi, Renzo, i Maurizio Ciofalo. "Palladium-Catalysed Intermolecular Direct C–H Bond Arylation of Heteroarenes with Reagents Alternative to Aryl Halides: Current State of the Art". Current Organic Chemistry 26, nr 3 (luty 2022): 215–74. http://dx.doi.org/10.2174/1385272826666220201124008.

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Abstract: This unprecedented review with 322 references provides a critical up-to-date picture of the Pd-catalysed intermolecular direct C–H bond arylation of heteroarenes with arylating reagents alternative to aryl halides that include aryl sulfonates (aryl triflates, tosylates, mesylates, and imidazole-1-sulfonates), diaryliodonium salts, [(diacetoxy)iodo]arenes, arenediazonium salts, 1-aryltriazenes, arylhydrazines and N’-arylhydrazides, arenesulfonyl chlorides, sodium arenesulfinates, arenesulfinic acids, and arenesulfonohydrazides. Particular attention has been paid to summarise the preparation of the various arylating reagents and to highlight the practicality, versatility, and limitations of the various developed arylation protocols, also comparing their results with those achieved in analogous Pd-catalysed arylation reactions involving the use of aryl halides as electrophiles. Mechanistic proposals have also been briefly summarised and discussed. However, data concerning Pd-catalysed direct C–H bond arylations involving the C–H bonds of aryl substituents of the examined heteroarene derivatives have not been taken into account.

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32

Lavandier, CD, MP Pelletier i VC Reinsborough. "Surfactant Inclusions by Modified β-Cyclodextrins". Australian Journal of Chemistry 44, nr 3 (1991): 457. http://dx.doi.org/10.1071/ch9910457.

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Binding constants for the inclusion of sodium alkane-1-sulfonates (C5-C10, C12) by four modified β- cyclodextrins (2,6-O-dimethyl-β-cyclodextrin, 2,3,6-O-trimethyl-β-cyclodextrin, hydroxypropyl-β-cyclodextrin and maltosyl-β-cyclodextrin ) were determined conductimetrically at 25°C. Binding increased with increasing length of the alkyl chain. Generally, the substituted β- cyclodextrins were no more effective as encapsulating agents than ordinary β- cyclodextrin with the persubstituted 2,3,6-O-trimethyl-β-cyclodextrin being the weakest.

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33

UEDAIRA, Hisashi, i Hatsuho UEDAIRA. "Nuclear magnetic relaxations of 2H and 23Na in aqueous solutions of sodium sulfonates." NIPPON KAGAKU KAISHI, nr 10 (1986): 1265–69. http://dx.doi.org/10.1246/nikkashi.1986.1265.

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Reshetnyak, E. A., O. S. Chernyshova i N. O. Mchedlov-Petrosyan. "Premicellar aggregation in water–salt solutions of sodium alkyl sulfonates and dodecyl sulfate". Colloid Journal 78, nr 5 (wrzesień 2016): 647–51. http://dx.doi.org/10.1134/s1061933x16050124.

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35

Rusnam, Syafrawati i Neni Gusmanizar. "Screening of Xenobiotics-degrading Microorganisms from Sumateraâ€™s Soil". Journal of Biochemistry, Microbiology and Biotechnology 7, nr 1 (31.07.2019): 23–25. http://dx.doi.org/10.54987/jobimb.v7i1.448.

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Microorganisms from thirty soil samples from various locations in West Sumatera was screened for their ability to grow on xenobiotics such as acrylamide, propionamide, polyethylene glycol (PEG) 1000, Sodium dodecyl Sulfate (SDS), Sodium dodecylbenzene sulfonates (SDBS), diesel and phenol. The screening media contain all of these xenobiotics as carbon sources, ammonium sulphate as nitrogen sources and trace elements. The growth of these microorganisms on the xenobiotics was monitored at A600 nm on a microplate. Of the isolates screened, the number of bacterial isolates than can grow on acrylamide, propionamide, polyethylene glycol (PEG) 1000, SDS, SDBS, diesel and phenol were 23, 22, 13, 17, 3, 17 and 17, respectively, all as carbon sources. These xenobiotics-degrading isolates can be further utilized in the future as bioremediation agent.

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36

Fu, Zhengjiang, Zhenjiang Yang, Li Sun, Jian Yin, Xuezheng Yi, Hu Cai i Aiwen Lei. "Electrochemical Synthesis of Aryl Sulfonates from Sodium Sulfinates and Phenols under Metal-Free Conditions". Chinese Journal of Organic Chemistry 42, nr 2 (2022): 600. http://dx.doi.org/10.6023/cjoc202107060.

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Wang, Xiao-Chun, Lei Zhang, Qing-Tao Gong, Lu Zhang, Lan Luo, Zhen-Quan Li, Sui Zhao i Jia-Yong Yu. "Study on Foaming Properties and Dynamic Surface Tension of Sodium Branched-alkyl Benzene Sulfonates". Journal of Dispersion Science and Technology 30, nr 1 (5.01.2009): 137–43. http://dx.doi.org/10.1080/01932690802313626.

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38

Oates, John D., i Robert S. Schechter. "Effect of solubilization of CO2 on the critical micelle concentration of sodium alkyl sulfonates". Journal of Colloid and Interface Science 131, nr 2 (wrzesień 1989): 307–19. http://dx.doi.org/10.1016/0021-9797(89)90175-6.

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39

Mubarakova, Liliya R., i German K. Budnikov. "Determination of δ-hexadecansultone in sodium α-olefinesulphonates and liquid detergents using gas chromatography-mass spectrometry (GC/MS)". Industrial laboratory. Diagnostics of materials 85, nr 7 (11.08.2019): 16–21. http://dx.doi.org/10.26896/1028-6861-2019-85-7-16-21.

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Sultones are cyclic esters of hydroxysulfonic acids, which are formed in the process of sulfonation of α-olefins with sulfur trioxide gas. More stable sultones may be present in the final product — an anionic surfactant — sodium α-olefin sulfonate (AOC-Na). AOC-Na is widely used in the production of household chemicals and cosmetic products, including liquid dishwashing detergents. Sultones are strong skin sensitizers, their level in AOC-Na should be strictly controlled and not exceed 5 ppm. Operational and strict control of the sultone content upon AOC-Na production allows timely adjustment at the stage of hydrolysis, which leads to a more complete disclosure of the sultone cycle with the formation of the corresponding olefin sulfonates and hydroxyalkanesulfonates. We propose a method for determining δ-hexadecansultone in liquid dishwashing detergents and sodium α-olefinsulfonates obtained on the basis of α-olefins of C14 – C16 fractions using GC/MS, which provides shortening of sample preparation and keeps the sensitivity with a detection limit of 0.02 mg/kg. The effect of various weakly polar and non-polar organic solvents used for Sultone extraction from AOC-Na and liquid detergent on liquid extraction based on the dispersion of the extractant in an alcohol/water phase is studied. When selecting the solvent we have shown that the use of diethyl ether provided the best extraction of the analyte. Determination of the analyte extraction recovery was performed using the reaction of hydrolysis of the extracted mixture. We specified the operating mode of the device which provided complete separation of the components of the analyzed compounds including the samples of liquid detergent for dishes being a multicomponent mixture of complex composition.

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40

Xin-Wang, SONG, WANG Yi-Yang, CAO Xu-Long, LUO Lan, WANG Lin, ZHANG Lu, YUE Xiang-An, ZHAO Sui i YU Jia-Yong. "Dilational Viscoelastic Properties of Sodium Alkyl Benzene Sulfonates with Different Structures at Octane/Water Interface". Acta Physico-Chimica Sinica 22, nr 12 (2006): 1441–44. http://dx.doi.org/10.3866/pku.whxb20061202.

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41

Xiong, Yang, Youwen Sun i Guozhu Zhang. "Copper-Catalyzed Synthesis of β-Azido Sulfonates or Fluorinated Alkanes: Divergent Reactivity of Sodium Sulfinates". Organic Letters 20, nr 19 (24.09.2018): 6250–54. http://dx.doi.org/10.1021/acs.orglett.8b02735.

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42

Zheng, J., L. T. Taylor, J. David Pinkston i M. L. Mangels. "Effect of ionic additives on the elution of sodium aryl sulfonates in supercritical fluid chromatography". Journal of Chromatography A 1082, nr 2 (sierpień 2005): 220–29. http://dx.doi.org/10.1016/j.chroma.2005.04.086.

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43

Wang, Zeng-Lin, Zhen-Quan Li, Lei Zhang, Hai-Yao Huang, Lu Zhang, Sui Zhao i Jia-Yong Yu. "Dilational Properties of Sodium 2,5-Dialkyl Benzene Sulfonates at Air−Water and Decane−Water Interfaces". Journal of Chemical & Engineering Data 56, nr 5 (12.05.2011): 2393–98. http://dx.doi.org/10.1021/je1013312.

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44

Yin, Xiu-Li, Li-Jun Wan, Zheng-Yu Yang i Jia-Yong Yu. "Self-organization of surfactant molecules on solid surface: an STM study of sodium alkyl sulfonates". Applied Surface Science 240, nr 1-4 (luty 2005): 13–18. http://dx.doi.org/10.1016/j.apsusc.2004.06.102.

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45

Cassidei, L., i O. Sciacovelli. "33S nuclear magnetic resonance of some sodium sulfonates. Correlation between 33S and 13C chemical shifts". Journal of Magnetic Resonance (1969) 62, nr 3 (maj 1985): 529–32. http://dx.doi.org/10.1016/0022-2364(85)90223-9.

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46

Ruggiero, Melissa J., Haley Miller, Jessica Y. Idowu, Jeremiah D. Zitzow, Shu-Ching Chang i Bruno Hagenbuch. "Perfluoroalkyl Carboxylic Acids Interact with the Human Bile Acid Transporter NTCP". Livers 1, nr 4 (18.10.2021): 221–29. http://dx.doi.org/10.3390/livers1040017.

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Na+/taurocholate cotransporting polypeptide (NTCP) is important for the enterohepatic circulation of bile acids, which has been suggested to contribute to the long serum elimination half-lives of perfluoroalkyl substances in humans. We demonstrated that some perfluoroalkyl sulfonates are transported by NTCP; however, little was known about carboxylates. The purpose of this study was to determine if perfluoroalkyl carboxylates would interact with NTCP and potentially act as substrates. Sodium-dependent transport of [3H]-taurocholate was measured in human embryonic kidney cells (HEK293) stably expressing NTCP in the absence or presence of perfluoroalkyl carboxylates with varying chain lengths. PFCAs with 8 (PFOA), 9 (PFNA), and 10 (PFDA) carbons were the strongest inhibitors. Inhibition kinetics demonstrated competitive inhibition and indicated that PFNA was the strongest inhibitor followed by PFDA and PFOA. All three compounds are transported by NTCP, and kinetics experiments revealed that PFOA had the highest affinity for NTCP with a Km value of 1.8 ± 0.4 mM. The Km value PFNA was estimated to be 5.3 ± 3.5 mM and the value for PFDA could not be determined due to limited solubility. In conclusion, our results suggest that, in addition to sulfonates, perfluorinated carboxylates are substrates of NTCP and have the potential to interact with NTCP-mediated transport.

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Southwick, Jeffrey G., Esther van den Pol, Carl H. van Rijn, Diederik W. van Batenburg, Diederik Boersma, Yi Svec, Ahmad Anis Mastan, Gordon Shahin i Kirk Raney. "Ammonia as Alkali for Alkaline/Surfactant/Polymer Floods". SPE Journal 21, nr 01 (3.06.2015): 10–21. http://dx.doi.org/10.2118/169057-pa.

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Summary Ammonia is logistically preferred over sodium carbonate for alkaline/surfactant/polymer (ASP) enhanced-oil-recovery projects because of its low molar mass and the possibility for it to be delivered as a liquid. On an offshore platform, space and weight savings can be the determining factor in deciding whether an ASP project is feasible. Logistics may also be critical in determining the economic feasibility of projects in remote locations. Ammonia as alkali together with a surfactant blend of alkyl propoxy sulfate/internal olefin sulfonate (APS/IOS) functions as an effective alkali. Surfactant adsorption is low, and oil recovery in corefloods is high. Static adsorption tests show that low surfactant adsorption is attained at pH >9, a condition that ammonia satisfies at low solution concentration. It is expected that ammonia has a performance deficiency relative to sodium carbonate in that it does not precipitate calcium from solution. Calcium accumulation in the ammonia ASP solution will occur, caused by ion exchange from clays. The high oil recovery for ammonia and the calcium accumulation in ASP and surfactant/polymer corefloods with APS/IOS blends show that this surfactant system is effective and calcium-tolerant. Also, phase behavior and interfacial-tension (IFT) measurements suggest that APS/IOS blends remain effective in the presence of calcium. Ethylene oxide/propylene oxide sulfates (such as the used APS) are known commercially available, calcium-tolerant surfactants. However, because of hydrolysis, sulfate-type surfactants are suitable for use only in lower-temperature reservoirs. Very different behavior was noticed for phase-behavior measurements with calcium-intolerant surfactants such as alkyl benzene sulfonates and IOS. In this case, calcium addition results in a very high IFT and complete separation of oil and brine. Presumably, this will result in low oil recovery. A preferred approach for ASP offshore with divalent-ion-intolerant surfactants may be the use of a hybrid alkali system combining the attributes of sodium carbonate and ammonia. The concept is to supply the bulk of the alkalinity for an ASP flood by ammonia with all the inherent logistical advantages. A minor quantity of sodium carbonate is added to the formulation to specifically precipitate calcium ions.

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Moroz, A. P., V. M. Zimin, A. I. Gershenovich, A. A. Sando, V. M. Yiriev i A. A. A. Arshakuni. "Study of Surface and Colloidal Properties of Sodium Alkylbenzene Sulfonates with a broad Fractional Compo- SIÜON". Tenside Surfactants Detergents 22, nr 1 (1.01.1985): 8–9. http://dx.doi.org/10.1515/tsd-1985-220104.

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Zhang, Ji-Chao, Lan-Lei Guo, Lei Zhang, Lin-Fang Dong, Lu Zhang, Lan Luo i Sui Zhao. "Surface Dilational Properties of Sodium 4-(1-methyl)-Alkyl Benzene Sulfonates: Effect of Alkyl Chain Length". Zeitschrift für Physikalische Chemie 227, nr 4 (kwiecień 2013): 429–40. http://dx.doi.org/10.1524/zpch.2013.0373.

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Tan, Xiao-Li, Lu Zhang, Sui Zhao, Wen Li, Jian-Ping Ye, Jia-Yong Yu i Jing-Yi An. "Aggregation of Sodium 1-(n-Alkyl)naphthalene-4-sulfonates in Aqueous Solution: Micellization and Microenvironment Characteristics". Langmuir 20, nr 17 (sierpień 2004): 7010–14. http://dx.doi.org/10.1021/la049055v.

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