Category: 25956-17-6

Saha, Tapan Kumar; Bishwas, Raton Kumar; Karmaker, Subarna; Islam, Zinia published an article about the compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate( cas:25956-17-6,SMILESS:O=S(C1=CC=C2C(/N=N/C3=CC(C)=C(S(=O)([O-])=O)C=C3OC)=C(O)C=CC2=C1)([O-])=O.[Na+].[Na+] ).Quality Control of Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:25956-17-6) through the article.

Allura red AC (ARAC) dye adsorption by natural sawdust (NSD) and hexadecylpyridinium bromide-treated sawdust (MSD) was assessed in aqueous solution as a function of contact time, solution pH, particle size, adsorbent dose, dye concentration, temperature, and ionic strength. Adsorbents were characterized by Fourier transform IR spectroscopy and x-ray diffraction crystallog. Dye adsorption by both adsorbents was confirmed by field emission SEM and energy-dispersive x-ray spectroscopy. The maximum dye adsorption occurred within 120 min at pH 2.0 for NSD and pH 3.0 for MSD, resp., with a 0-75μm particle size and 0.07 g/50 mL ARAC dye solution adsorbent dose (50μmol/L). Batch adsorption kinetic data were followed by a pseudo-second-order kinetic model vs. pseudo-first-order and Elovich kinetic models. Equilibrium adsorption isotherms were explained by the Langmuir isotherm model, and the maximum extent of adsorption was 52.14μmol/g for NSD and 151.88μmol/g for MSD at 55°. Activation energy (Ea) and thermodn. parameters (ΔG, ΔH, ΔS, ΔG°, ΔH°, ΔS°) values proved ARAC dye adsorption by both NSD and MSD sorbents was a spontaneous-endothermic physisorption process. ARAC (98-99%) was released from dye-loaded adsorbents in aqueous solution (pH ≥12) within 120 min. NSD and MSD adsorbents were reused a second time without significant loss of adsorption efficiency.

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Boyko, Olexandra; Brygadyrenko, Viktor published an article about the compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate( cas:25956-17-6,SMILESS:O=S(C1=CC=C2C(/N=N/C3=CC(C)=C(S(=O)([O-])=O)C=C3OC)=C(O)C=CC2=C1)([O-])=O.[Na+].[Na+] ).Recommanded Product: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:25956-17-6) through the article.

We studied how first-stage larvae Strongyloides papillosus (Wedl, 1856), parasites of the digestive tract of ruminants and rabbits, are affected by 17 food colorings: one-component – tartrazine (E102), Sunset Yellow FCF (E110), azorubine (E122), Ponceau 4R (E124), Allura Red AC (E129), indigocarmine (E132), Brilliant Blue FCF (E133), Green S (E142), Brown HT (E155), and their 8 multi-component mixtures The strongest effect on vitality of larvae of S. papillosus was taken by food colorings tartrazine and Sunset Yellow FCF. Solutions of tartrazine and Sunset Yellow FCF in 1% concentrations led to death of non-invasive larvae (L1-2) of S. papillosus by 36.9% and 38.9% greater compared with the control resp. Similar results were obtained while using 0.1% solution of Sunset Yellow FCF. Use of colorings in lower concentrations caused no death of nematode larvae of S. papillosus. Over 50% of non-invasive larvae remained vital over 24 h exposure to these colorings. Out of 17 studied one-component and multi-component food additives, none caused increase in mortality of invasive larvae of S. papillosus.

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Synthetic Route of C18H14N2Na2O8S2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, is researched, Molecular C18H14N2Na2O8S2, CAS is 25956-17-6, about Evaluation of several white-rot fungi for the decolorization of a binary mixture of anionic dyes and characterization of the residual biomass as potential organic soil amendment. Author is Merino-Restrepo, Andres; Mejia-Otalvaro, Felipe; Velasquez-Quintero, Carolina; Hormaza-Anaguano, Angelina.

Industrial pollution is a great concern for modern society and developing cyclic processes is one of the major challenges. As far as we know, this work is the first to report the use of multiple white-rot fungi species for degrading a binary mixture of anionic dyes under solid state fermentation (SSF) conditions and a further physicochem. characterization of the residual biomass. First, eight white-rot fungi decolorized the dye mixture of brilliant blue FCF and allura red AC adsorbed onto corncob, reaching decolorizations between 11.47% and 87.64%. Then, I. lacteus, B. adusta and T. versicolor, based on the decolorization yield, were selected to evaluate the effect of carbon:nitrogen ratio, moisture content and inoculum quantity on the decolorization percentage. The factorial designs showed that C:N ratio had a neg. effect while moisture and inoculum quantity a pos. effect. In terms of the kinetics, the three white-rot fungi achieved their maximum decolorization level, around 80.11-86.04%, after 10-12 days. I. lacteus exhibited the highest decolorization percentage, even though only the enzyme manganese peroxidase was detected, with a maximum activity of 6.62 U gds-1 at day 14. Besides, T. versicolor was the only species with laccase activity, with a maximum of 15.94 U gds-1 at day 6 of fermentation The physicochem. characterization of the biomass allowed to conclude that these aggregates represent a potential organic amendment, as for their significant oxidizable organic carbon (more than 9.5% on wet basis) and essential nutrients content, as well as for their low ash content (less than 1% on wet basis). Finally, for outlining an efficient bioremediation cycle, a cheap and effective methodol. for drying the biomass at the end of the SSF process is required.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Three-way analysis-based pH-UV-Vis spectroscopy for quantifying allura red in an energy drink and determining colorant’s pKa, published in 2021, which mentions a compound: 25956-17-6, Name is Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, Molecular C18H14N2Na2O8S2, Formula: C18H14N2Na2O8S2.

Three-way anal.-based pH-UV-Vis spectroscopy was proposed for quantifying allura red in an energy drink product without the need for chromatog. anal., and determining the colorant’s pKa without using any titration technique. In this study, UV-Vis spectroscopic data matrixes were obtained from absorbance measurements at five different pH levels from pH 8 to pH 12 and arranged as a three-way array (wavelength x sample x pH). In the three-way anal. procedure, parallel factor anal. (PARAFAC) was implemented to decompose the three-way array into a set of trilinear components. Each set of three components relates to spectral, pH and relative concentration profiles of allura red and sample matrix in the energy drink. First, UV-Vis spectra of the colorant’s acid-base pair and sample’s matrix were characterized by using the estimated spectral profile. Then, from the pH profile the pKa value was found to be 11.28 for the related colorant. Finally, allura red in energy drink samples was determined using the estimated concentration curve in the relative concentration profile. In the quantitation procedure, the working concentration range was 0.8-19.2 mg/mL. PARAFAC approach was tested in terms of selectivity, precision, and accuracy of the method. Added recovery results obtained by applying the proposed method to spiked samples were between 101.5% and 103.5%. In the application of the method to the anal. of real samples, successful results were reported. For a comparison, an ultra-performance liquid chromatog. method was developed for the quantitation of the colorant. Compared to the chromatog. method, we observed that PARAFAC model was simple and less expensive without requiring separation

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 25956-17-6, is researched, SMILESS is O=S(C1=CC=C2C(/N=N/C3=CC(C)=C(S(=O)([O-])=O)C=C3OC)=C(O)C=CC2=C1)([O-])=O.[Na+].[Na+], Molecular C18H14N2Na2O8S2Journal, Article, Food Chemistry called Photostability of organic red food dyes, Author is Boyles, Catherine; Sobeck, Sarah J. Schmidtke, the main research direction is organic red food dye photodegradation beverage photostability; Allura red AC (PubChem CI: 33258); Betanin (PubChem CI: 12300103); Beverage formulation; Carminic acid (PubChem CID: 14749); Organic red dyes; Photodegradation.Related Products of 25956-17-6.

The shift from artificial to natural ingredients is a rising trend in the food industry. However, natural coloring agents tend to be less stable than their synthetic counterparts when exposed to light, air, changes in pH, and heat. This study compares the photostability of three organic red dyes, Red 40 (allura red AC), betanin and carminic acid, in aqueous and soft drink solutions The degradation, traced through absorbance spectroscopy, is well fit to first-order kinetics. Two distinct timescales are observed in aqueous solution but only a single, faster decay in the soft drink matrix. Betanin is the least stable dye in both solvent environments and Red 40 exhibits the greatest destabilization in the soft drink solution Anoxia has different impacts dependent upon both the dye and solvent system. The anal. provides further insight into the degradation mechanisms for these different red dyes and the role of environment on their photostability.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, is researched, Molecular C18H14N2Na2O8S2, CAS is 25956-17-6, about Supramolecular solvent-based microextraction of Sudan Orange G at trace levels for its separation, preconcentration and spectrophotometric determination, the main research direction is sudan orangeG supramol solvent microextraction spectrophotometric determination.Electric Literature of C18H14N2Na2O8S2.

A novel, fast and accurate separation-preconcentration method for supramol. liquid phase microextraction of sudan orange G dyestuff prior to its UV-vis spectrophotometric determination was developed. Sudan orange G in the model solution was extracted to the supramol. solvent phase at pH 4.0. Supramol. solvent used in this study was prepared from THF (THF) and decanoic acid. Sudan orange G concentration was measured in the UV-Vis spectrophotometer at 380 nm. The sample volume, pH, matrix effect, centrifugation time, ultrasonic bath time, supramol. solvent volume has been optimized and the work was done under these conditions. The relative standard deviation % value was found below 5%. In this study, the limit of detection (LOD) value and preconcentration factor were found to be 3.4 μgL-1 and 40, resp. The presented supramol. liquid phase microextraction procedure was applied to artificial sweat samples and water samples.

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Category: pyrazoles-derivatives. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, is researched, Molecular C18H14N2Na2O8S2, CAS is 25956-17-6, about Chitosan hydrogel scaffold modified with carbon nanotubes and its application for food dyes removal in single and binary aqueous systems. Author is Goncalves, Janaina Oliveira; da Silva, Keli Arruda; Rios, Estefani Cardillo; Crispim, Marselle Martins; Dotto, Guilherme Luiz; de Almeida Pinto, Luiz Antonio.

This work developed one promising adsorbent based on chitosan hydrogel scaffold modified with carbon nanotubes, for food dye removal in single and binary aqueous systems. The modified hydrogel scaffold was characterized in relation to the gel strength, swelling degree, surface attributes, and IR spectrum. Adsorption isotherms were performed using dyes, food red 17 (FdR17) and food blue 1 (FdB1), in single and binary aqueous systems. The exptl. data were adjusted to the Langmuir model and the thermodn. parameters were estimated The kinetic behavior was evaluated and, desorption studies were performed to verify the reuse capacity of the modified hydrogel scaffold. The results showed that maximum adsorption capacities were of 1508 and 1480 mg g-1 for the single system and of 955 and 902 mg g-1 for the binary system, for FdB1 and FbR17, resp. The thermodn. parameters indicated that the adsorption was the spontaneous, exothermic and favorable process. The model that best represented the kinetic data was that of Avrami. In desorption, the adsorbent can be used until four times and maintaining the adsorption capacity of the adsorbent in 71% of the initial capacity.

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 25956-17-6, is researched, SMILESS is O=S(C1=CC=C2C(/N=N/C3=CC(C)=C(S(=O)([O-])=O)C=C3OC)=C(O)C=CC2=C1)([O-])=O.[Na+].[Na+], Molecular C18H14N2Na2O8S2Journal, Microchemical Journal called Extraction and determination of synthetic food dyes using tetraalkylammonium based liquid-liquid extraction, Author is Smirnova, Svetlana V.; Lyskovtseva, Kristina A.; Pletnev, Igor V., the main research direction is synthetic food dye tetraalkylammonium liquid extraction ionic preconcentration analysis.HPLC of Formula: 25956-17-6.

Tetraalkylammonium based liquid-liquid biphasic systems (employing room-temperature ionic liquids tetraoctylammonium N-lauroylsarcosinate, TOALS, and tetrahexylammonium dihexylsulfosuccinate, THADHSS, as well as tetrahexylammonium bromide, THABr) were used for liquid-liquid extraction of synthetic food dyes followed by spectrophotometric determination Dyes studied are Allura Red AC, Red 2G, Azorubine, and Fast Green FCF (all anionic). Both extraction to pre-synthesized ILs and to ILs formed in situ was studied. The effects of pH, ionic liquid volume, dye concentration, time of extraction/centrifugation and other factors were investigated and optimum conditions were established. Dispersive liquid-liquid microextraction (DLLME) in situ is based on a metathesis between two salts which are suppliers of cations and anions of IL. It was found that efficiency of in situ DLLME with the studied ILs strongly depends on the ratio between cation and anion suppliers (THABr and NaDHSS/ NaLS, resp.) and drops sharply if an excess of anion supplier is used. Liquid-liquid extraction system using THABr was found to be superior for preconcentration and spectrophotometric determination of Allura Red AC and Azorubine in food samples. Under optimal conditions, recovery of all analytes was nearly 100%. Linear calibration curves in the range of 0.05-4.95 mg L-1 for Allura Red AC and 0.05-2.00 mg L-1 for Azorubine were obtained. Detection limits based on 3Sb were 0.004 and 0.006 mg L-1 for Allura Red and Azorubine, resp. The proposed method was applied to determination of Allura Red and Azorubine in beverage and Easter egg coloring set.

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Recommanded Product: 25956-17-6. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, is researched, Molecular C18H14N2Na2O8S2, CAS is 25956-17-6, about Effective adsorption of dyes on an activated carbon prepared from carboxymethyl cellulose: Experiments, characterization and advanced modelling. Author is Wang, Huifeng; Li, Zichao; Yahyaoui, Samia; Hanafy, Hassan; Seliem, Moaaz K.; Bonilla-Petriciolet, Adrian; Luiz Dotto, Guilherme; Sellaoui, Lotfi; Li, Qun.

An activated carbon with a high surface area and outstanding adsorption properties was prepared for dye removal from water. The new adsorbent was obtained from the chem. activation and pyrolysis of sodium CM-cellulose (CMC). This activated carbon was employed to analyze and characterize the adsorption mechanism of three dye mols.: methyl violet, allura red and congo red. Different characterization techniques and exptl. adsorption isotherms quantified at different temperatures (25-45°C) were utilized to interpret the dye adsorption mechanism. A double layer adsorption model was employed to estimate the steric and energetic parameters associated with the adsorption of these dye mols. The modeling results provided the possible adsorption orientations of these dyes on adsorbent surfaces at different operating temperatures and the number of bonded dye mols. per functional group of this adsorbent was also analyzed. Calculated adsorption energies showed that both exothermic and endothermic processes were feasible for these dyes and phys. forces were involved in the adsorption mechanism. Overall, this new adsorbent showed a competitive performance for dye removal in aqueous solution and can be a potential option for industrial applications.

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Formula: C18H14N2Na2O8S2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, is researched, Molecular C18H14N2Na2O8S2, CAS is 25956-17-6, about Facile preparation of nano-g-C3N4/UiO-66-NH2 composite as sorbent for high-efficient extraction and preconcentration of food colorants prior to HPLC analysis. Author is Zhang, Xiaowan; Yang, Yixin; Qin, Peige; Han, Lizhen; Zhu, Wenli; Duan, Shaofeng; Lu, Minghua; Cai, Zongwei.

In this work, the nano-g-C3N4/UiO-66-NH2 composite was prepared by one-step solvothermal method. The as-prepared composite was characterized by SEM, Brunner-Emmet-Teller measurement, energy dispersive spectrometer, X-ray diffraction, and Fourier transform IR spectroscopy. By using nano-g-C3N4/UiO-66-NH2 composite as sorbent, a dispersive solid-phase extraction coupled with high-performance liquid chromatog. was developed to sensitive anal. of food colorants including tartrazine, amaranth, carmine, sunset yellow, allura red and bright blue. The experiment parameters including the amount of sorbent, adsorption time, the pH of adsorption solution, desorption time, desorption solvent, the pH of desorption solution as well as the proportion between desorption solvent and buffer solvent were investigated. Under the optimized conditions, the limits of detection (S/N = 3) and limits of quantitation (S/N = 10) were determined in the ranges of 0.08-0.8 and 0.2-2.0 ng/mL, resp. With the developed sample pretreatment method, carmine and brilliant blue were determined from blueberry juice by HPLC-DAD. The contents were calculated as1.53μg/mL and 0.17μg/mL, resp.

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