Category: 25956-17-6

Recommanded Product: 25956-17-6. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. 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 Modified clays as an efficient adsorbent for brilliant green, ethyl violet and Allura red dyes: kinetic and thermodynamic studies. Author is Ullah, Rehmat; Iftikhar, Faiza Jan; Ajmal, Muhammad; Shah, Afzal; Akhter, Muhammad Salim; Ullah, Haseeb; Waseem, Amir.

Clay minerals can effectively adsorb contaminants from aqueous effluents due to their good adsorption and high cation exchange capacity. However, naturally occurring clay materials possessing hydrophilic features are not especially effective for the removal of organic pollutants. Therefore, in the present work the issue of hydrophilicity is tackled by modification of the clay (Pakistan origin) to prepare organoclays. Hexadecylpyridinium chloride, cetyltrimethylammonium bromide, and sodium dodecyl sulfate were used as clay modifiers. Changes in the basal spacing of clay layers after modification with surfactants were determined through XRD anal. Chem. compositions of the clay and organoclays were determined by FTIR spectroscopy. Surface morphol. of the as-prepared organoclays was assessed from SEM anal. The modified clays (organoclays) were tested for their ability as potential adsorbents for three dyes from water: brilliant green, ethyl violet and allura red. All three modified clays showed high adsorption characteristics by removing (>90%) of all three dyes with an adsorption capacity ranging from 35 to 85 mg/g. The time-dependent adsorption experiments showed that the rates of adsorption of dyes on organoclays were fast, adsorbing maximum amounts of dyes ranging from 15 to 80 mins of contact time. The adsorption kinetic study revealed that the dye removal process is mainly governed by a pseudo-1st order mechanism. Thus, surfactant-modified clays are an excellent choice as cost-effective and efficient adsorbents for the purification of water from dye contaminants.

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Name: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. 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 Simultaneous electrochemical quantification of foodstuff dyes allura red and tartrazine using a bare carbon paste electrode. Author is Rivera-Hernandez, S. I.; Corona-Avendano, S.; Vazquez-Huerta, G.; Palomar-Pardave, M.; Romero-Romo, M.; Ramirez-Silva, M. T..

A bare carbon paste electrode, BCPE, was used to determine simultaneously the foodstuff dyes Allura Red (AR) and Tartrazine (Trz) in aqueous media, achieving the following anal. parameters: for AR sensitivity of (0.126 ± 0.002) μA (mg l)-1 with a limit of detection (LOD) of (0.14 ± 0.004) mg l-1 and a Trz sensitivity of (0.392 ± 0.024) μA (mg l)-1 with a LOD of (0.310 ± 0.034) mg l-1. Addnl., the individual and simultaneous quantifications of AR and Trz in real samples, were performed through the electrochem. method proposed in this work. In the case of individual dyes quantification, the results were like those found using UV-vis spectrophotometry, however, contrary to the electrochem. method proposed in this work, the spectrophotometric method cannot be used for the simultaneous quantifications due to the dyes absorbance overlap. Furthermore, the BCPE is a robust electrode that, contrary to other modified CPE reported for this purpose, can be reused for multiple quantifications by simple mech. polishing of its electroactive surface, beside its excellent reproducibility, accuracy, and lifetime. Usually the dyes are found in concentrations of mg l-1 in foodstuffs, which makes this electrode suitable for use in foods and non-alc. beverages.

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Quality Control of Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. 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 Method validation of 12 kinds of food dye in chewing gums and soft drinks, and evaluation of measurement uncertainty for soft drinks. Author is Jang, Gill-Woong; Choi, Sun-Il; Choi, Seung-Hyun; Han, Xionggao; Men, Xiao; Kwon, Hee-Yeon; Choi, Ye-Eun; Lee, Ok-Hwan.

We developed and validated a method for the simultaneous quant. anal. of food dyes in two food matrixes, i.e., chewing gum and soft drinks. Furthermore, we evaluated the stability of food dyes in these matrixes with respect to the pH and acid content. The optimized and validated method is based on high-performance liquid chromatog.-photodiode array (HPLC-PDA) and liquid chromatog.-tandem spectroscopy; the proposed method could identify and quantify 12 dyes in the two matrixes. The recoveries of the food dyes identified by HPLC-PDA anal. ranged from 98.61% to 118.42%, with relative standard deviations of 0.06-4.90%. In addition, the expanded uncertainties of the measurements ranged from 0.57 to 3.12%. Finally, the food dyes were found to be stable in the matrixes over 30 days. Thus, we believe that the proposed anal. method is suitable for the identification and quantification of food dyes in chewing gum and soft drink samples.

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Orzolek, Brandon J.; Kozlowski, Marisa C. 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+] ).Electric Literature of C18H14N2Na2O8S2. 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.

Herein, we describe an accessible and safe organic chem. lab experiment that can be completed at home. Liquid-liquid extraction is a fundamental organic chem. lab experiment that touches on topics such as chem. structure, d., solubility, and acid-base chem. Given the increased demand for safe organic chem. experiments that can be performed in the at-home environment, we have adapted the conventional wet lab liquid-liquid extraction experience by using food colorants. Students are first guided through sample questions to establish a basic understanding of solubility, acid-base chem., and separation via extraction techniques. Next, they are given unknown dye mixtures which they subject to liquid-liquid extraction using a plastic soda bottle with vegetable oil, water, white vinegar, and sodium bicarbonate. All materials are readily available and food-safe, making the experiment amenable to the at-home environment while still allowing students to phys. engage in a foundational lab experiment

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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 Assessing the sustainability of natural and artificial food colorants. Author is Gebhardt, Beate; Sperl, Regina; Carle, Reinhold; Mueller-Maatsch, Judith.

Food producers thrive towards the satisfaction of today’s consumer demands for natural, safe, and sustainable food products. Thereby, the application of food colorants is a major issue. In this article, we aimed at giving insights into the evaluation of natural and artificial food colorants and revealing weaknesses within the value chain by use of a hot spot anal. Implying red hues, natural plant-based anthocyanins (E163) and lycopene (E160d), natural animal-derived carmine (E120), and chem. synthesized Allura Red AC (E129) were chosen to cover a wide range of value chains. Three major metrics were identified – environment, economics including legal aspects, and social responsibility. The first two metrics considered topics related to food producers and food additive manufacturers. Animal husbandry and crop cultivation, yield of the raw material, environmentally friendly production, exploitation of byproducts, and naturalness were indicators for the environment metric. The economic metric consisted of the additives’ convenience for application, price, sensory properties, shelf life, restriction as limited application and legal labeling, stability within the food matrix, and availability. In contrast, the metric social responsibility combined all topics important to consumers and workers such as health promoting or harming ingredients, consumers’ attitudes towards the additives, as well as working conditions during production Applying the indicators to four different food colorants all imparting the same color hue, the natural, plant-derived colorant anthocyanins (E163) was found to be more sustainable than the natural, animal-derived colorant carmine (E120), the natural, plant-derived colorant lycopene (E160d), and the artificial colorant Allura Red AC (E129).

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Recommanded Product: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate. 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 Development and validation of a multipurpose and multicomponent method for the simultaneous determination of six synthetic dyes in different foodstuffs by HPLC-UV-DAD. Author is Cheibub, Ana Maria de Souza Santos; Bahiense de Lyra, Eduardo Silva; Alves, Barbara Jardim; Donagemma, Raquel Andrade; Duarte Pereira Netto, Annibal.

A simple and low-cost multipurpose anal. method using HPLC-UV-DAD was developed and validated, following international guidelines, for the determination of six synthetic food dyes: Tartrazine, Sunset Yellow, Amaranth, Allura Red, Indigotine, and Brilliant Blue. The method required a simple sample preparation step that consisted of dissolution or dilution of the samples in water, followed by pH adjustment and filtering through PVDF filters. No significant matrix effect was verified. Linear working ranges varied from 0.25 to 6.0 mg L-1. Appropriate limits of quantification (0.10 to 0.15 mg L-1), mean recoveries (90.2 to 106.6%), and repeatability and intermediate precision (<4.5%) were obtained. Sixty-one samples of different types of foodstuffs were analyzed: jelly and juice powder, jelly candy, jujube candy, hard candy, ice cream syrup, sports drinks, soft drinks, energy drinks, artificially colored ready-to-drink fruit juices and flavored alc. beverages. All studied samples showed dye levels in conformity with Brazilian regulations. When you point to this article, it is believed that you are also very interested in this compound(25956-17-6)Recommanded Product: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate and due to space limitations, I can only present the most important information.

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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 Food colors caught red-handed. Author is Kulkarni, Anmol; Jung, Steffen.

The etiol. of inflammatory bowel disorders (IBDs) involves an interplay of genetic and environmental factors. While human genomic analyses and preclin. animal models have revealed critical IBD risk genes and circuits, environmental effects remain poorly defined. In this issue, He et al. (2021) begin to fill this gap by reporting a striking potential of widely used food colorants to cause IBD-like colitis in mice.

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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 Nonlinear guiding of light in tunable food-dye solutions. Author is Liang, Guo; Han, Sojin; Hu, Xubo; Solis, Felix Martinez; Kelly, Trevor; Siggins, Graham; Xiang, Yinxiao; Xu, Huizhong; Chen, Zhigang.

We provide the first demonstration of nonlinear self-trapping of light in solutions of food coloring dyes, leading to dirt cheap soliton waveguides. The optical self-focusing nonlinearity observed in such solutions is attributed to the optical absorption force acting on dye mols., as the thermal effect at relatively higher power results in a self-defocusing nonlinearity. We found the nonlinear response increases when the laser wavelength is switched to near the peak absorption for all food dyes tested. Furthermore, the absorption-dependent nonlinearity can be tuned by making purposive samples of different food dyes. In particular, with appropriately mixing of dye solutions, nonlinear response arises for otherwise inactive wavelengths, leading to interaction between two beams of different wavelengths and formation of a coupled soliton-like pair. At milliwatt low power levels, self-trapping achieved at one wavelength in food-dye solutions can serve as low-cost waveguides for optical beams at other wavelengths.

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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 Polyvinylidene fluoride nanocomposite super hydrophilic membrane integrated with Polyaniline-Graphene oxide nano fillers for treatment of textile effluents, published in 2021-02-05, 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, Product Details of 25956-17-6.

Water pollution from the fashion industries containing dyes has become a major source of water pollution. These anthropogenic contaminated waters directly enter irrigation and drinking water systems, causing irreversible environmental damage to human health. Nanomembrane technol. has attracted extensive attention to remove these toxic chems. but new approaches are still required for improving removal efficiency and control the channel size. The work deals with the fabrication of a novel hybrid polyvinylidene fluoride (PVDF)-polyaniline (PANI) membrane with graphene oxide (GO). Incorporation of PANI-GO as a nanofiller has significantly improved antifouling properties and a solvent content of the fabricated membrane. Besides, pure water flux also increases from 112 to 454 L m-2 h-1 indicating the hydrophilic nature of the nanocomposite membrane. Among various compositions, the nanocomposites membrane with 0.1%w/v GO demonstrated a maximum of 98% dye rejection at 0.1 MPa operating pressure. After multiple testing of the membrane, the flux recovery ratio reached about 94% and dyes rejection improved with the addition of PANI-GO. The removal efficiency of the composite membrane for Allura red is 98% and for methyl orange is 95%. Based on the above results the PVDF/PANI/GO membranes are recommended for practical use in wastewater treatment, particularly for anionic dyes removal from textile effluents.

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Related Products of 25956-17-6. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. 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 Calcium Alginate as a Novel Sealing Agent for Colloidosomes.

We report on the preparation of colloidosomes formed with a poly(Me methacrylate-co-Bu acrylate) latex shell, sealed using calcium alginate as a novel nontoxic and biodegradable sealing agent. The aim is to encapsulate enzymes in detergent formulations. The proposed method, with vegetable oil as the continuous phase, avoids the use of harmful organic solvents. Allura Red has been used as a water-soluble dye, in the core, to analyze the influence of variables such as sodium alginate and latex concentrations on the sealing and release profiles. After formation, the capsules were dispersed in either water or propylene glycol. The capsules have been examined using optical, confocal, and scanning electron microscopies. Working with the highest sodium alginate concentration and latex volume, the encapsulation efficiency is between 60 and 80%. Propylene glycol enables a better dispersion of the capsules compared with water. Dye release data have been fitted to exponential and Michaelis-Menten-type equations, leading to kinetic parameters that allow the simulation of the release process.

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