Tag: 300-400

The impact and mechanism of quaternary ammonium compounds on the transmission of antibiotic resistance genes was written by Han, Yue;Zhou, Zhen-Chao;Zhu, Lin;Wei, Yuan-Yuan;Feng, Wan-Qiu;Xu, Lan;Liu, Yang;Lin, Ze-Jun;Shuai, Xin-Yi;Zhang, Zhi-Jian;Chen, Hong. And the article was included in Environmental Science and Pollution Research in 2019.SDS of cas: 122-18-9 The following contents are mentioned in the article:

The emergence of antibiotic resistance genes (ARGs) in microbes can be largely attributed to the abuse and misuse of antibiotics and biocides. Quaternary ammonium compounds (QACs) have been used worldwide as common disinfectants and detergents; however, their potential impact on the spread and diffusion of ARGs is still unknown. In this study, we detected the QAC resistance gene (qacEΔ1), the 1 integron gene (intI1), and 12 ARGs (sul1, sul2, cfr, cml, fexA, tetA, tetG, tetQ, tetX, ermB, bla_TEM, and dfrA1) in 48 water samples from three watersheds by quant. PCR (qPCR). We investigated the evolution of bacterial antibiotic resistance under QAC and antibiotic environmental pressures by long-term continuous culture. The changes in bacterial cell membrane and production of reactive oxygen species (ROS) were detected by flow cytometry, revealing the mechanism by which QAC affects the spread of antibiotic resistance. Our results showed that the QAC resistance gene was ubiquitous in watersheds and it had significant correlation with intI1 and seven ARGs (r = 0.999, p < 0.01). QACs could increase the resistance of bacteria to multiple antibiotics. QACs enhanced membrane permeability of bacterial cells and stimulated bacteria to produce ROS, which potentially promoted the transfer of plasmids between bacteria. In conclusion, this study demonstrated that QACs may facilitate the evolution and gene transfer of antibiotic resistance gene among microbiome. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9SDS of cas: 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.SDS of cas: 122-18-9

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Shape-Control of Pt-Ru Nanocrystals: Tuning Surface Structure for Enhanced Electrocatalytic Methanol Oxidation was written by Huang, Liang;Zhang, Xueping;Wang, Qingqing;Han, Yujie;Fang, Youxing;Dong, Shaojun. And the article was included in Journal of the American Chemical Society in 2018.Recommanded Product: N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride The following contents are mentioned in the article:

Despite the fact that both electrochem. experiments and d. functional theory calculations have testified to the superior electrocatalytic activity and CO-poisoning tolerance of PtRu alloy nanoparticles toward the MeOH oxidation reaction (MOR), the facet-dependent electrocatalytic properties of PtRu nanoparticles are scarcely revealed because it is extremely difficult to synthesize well-defined facets-enclosed PtRu nanocrystals. We, for the 1st time, report a general synthesis of ultrathin PtRu nanocrystals with tunable morphologies (nanowires, nanorods, and nanocubes) through a 1-step solvothermal approach and a systematic study of the structure-directing effects of different surfactants and the formation mechanism by control experiments and time-dependent studies. We use these {100} and {111} facets-enclosed PtRu nanocrystals as model catalysts to evaluate the electrocatalytic characteristics of the MOR on different facets. Remarkably, {111}-terminated PtRu nanowires exhibit much higher stability and electrocatalytic mass activity toward MOR, which are 2.28 and 4.32 times higher than those of {100}-terminated PtRu nanocubes and com. Pt/C, resp., indicating that PtRu {111} facets possess superior MeOH oxidation activity and CO-poisoning resistance relative to {100} facets. This work provides a series of well-defined PtRu nanocrystals with tunable facets which would be ideal model electrocatalysts for fundamental research in fuel cell electrocatalysis. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Recommanded Product: N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Recommanded Product: N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

A new fluoropolymer having triazine rings as a dielectric material: synthesis and properties was written by Zhou, Junfeng;Wang, Jiajia;Zhao, Jiaqing;Jin, Kaikai;Sun, Jing;Guo, Xiaojun;Fang, Qiang. And the article was included in Polymer Chemistry in 2017.Application of 122-18-9 The following contents are mentioned in the article:

A novel fluoropolymer having triazine rings and thermo-crosslinkable benzocyclobutene units is prepared by a facile phase transfer catalyzed interfacial polycondensation reaction between a diphenol and a dichloro-s-triazine. This is the first example of thermo-crosslinkable fluoropolymer containing triazine units. The polymer shows a high mol. weight (M_n) of more than 70 000, good solubility and film-forming ability, as well as high storage stability. When treated at a high temperature (>200 °C), the polymer easily converts to a crosslinked network, showing a low dielec. constant (D_k) of 2.58 at a range of frequencies from 0.1 to 30.0 MHz. Moreover, the crosslinked network exhibits a dielec. strength of 157.7 kV cm^-1, which is comparable with that of a widely used resin poly(2,6-dimethyl-1,4-phenylene ether). D-E loop tests indicate that the cured polymer possesses linear dielec. properties. The cured polymer also exhibits high hydrophobicity, which endows the polymer with a low water uptake of 0.11% after immersing it in water at room temperature for 72 h. Moreover, the crosslinked network exhibits high thermo-stability with a glass transition temperature of 264 °C and a 5 wt% loss temperature of 426 °C, as well as good mech. properties with an average hardness of 0.48 GPa and an average Young’s modulus of 11.92 GPa. Hence, this new fluoropolymer is suitable as a new dielec. matrix resin for the production of printed circuit boards used in the microelectronic industry. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Application of 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Application of 122-18-9

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Aggregation and adsorption properties of benzyldimethylhexadecylammonium tetrachloromanganate(II) metallosurfactant in water-ethylene glycol medium was written by Wagay, Tariq Ahmad;Charingia, Anushmita;Suting, Smarling;Askari, Hassan. And the article was included in Journal of Dispersion Science and Technology in 2021.Safety of N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride The following contents are mentioned in the article:

The aggregation and adsorption properties of metallosurfactant, benzyldimethylhexadecylammonium tetrachloromanganate(II) (BDHA₂[MnCl₄], where BDHA represents benzyldimethylhexadecylammonium group) in binary aqueous mixtures of ethylene glycol (EG) were investigated by tensiometric, conductometric, dynamic light scattering (DLS) and transmission electron microscopy (TEM) methods at 298.15 K. The percentage of EG (by weight) was varied between 0 and 100%. The physicochem. properties determined and discussed include critical micelle concentration (cmc), counterion binding constant (β), Gibbs free energy of micellization (), surface excess at cmc (), min. area per surfactant mol. (), surface pressure (πcmc), min. free energies (Gmin) and size of aggregates. This study revealed that with increase in percentage of EG the cmc of BDHA₂[MnCl₄] metallosurfactant increases and the cmc of BDHA₂[MnCl₄] in EG is about 158 times higher than that in water. The counterion binding constant values increase with increase in percentage of EG from 10% to 70% and thereafter decrease. The adsorption of metallosurfactant at the air-solution interface decreases as the EG content in the bulk increases. The values were found to be neg. and the neg. value decreases with increase in percentage of EG. Gordon parameter and ratio of surface tension of medium to that of the metallosurfactant solution at cmc are used to represent solvophobicity of the medium. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Safety of N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Safety of N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reconfigurable Polymer Shells on Shape-Anisotropic Gold Nanoparticle Cores was written by Kim, Juyeong;Song, Xiaohui;Kim, Ahyoung;Luo, Binbin;Smith, John W.;Ou, Zihao;Wu, Zixuan;Chen, Qian. And the article was included in Macromolecular Rapid Communications in 2018.Application of 122-18-9 The following contents are mentioned in the article:

Reconfigurable hybrid nanoparticles made by decorating flexible polymer shells on rigid inorganic nanoparticle cores can provide a unique means to build stimuli-responsive functional materials. The polymer shell reconfiguration has been expected to depend on the local core shape details, but limited systematic investigations have been undertaken. Here, two literature methods are adapted to coat either thiol-terminated polystyrene (PS) or polystyrene-poly(acrylic acid) (PS-b-PAA) shells onto a series of anisotropic gold nanoparticles of shapes not studied previously, including octahedron, concave cube, and bipyramid. These core shapes are complex, rendering shell contours with nanoscale details (e.g., local surface curvature, shell thickness) that are imaged and analyzed quant. using the authors’ customized anal. codes. It is found that the hybrid nanoparticles based on the chosen core shapes, when coated with the above two polymer shells, exhibit distinct shell segregations upon a variation in solvent polarity or temperature It is demonstrated for the PS-b-PAA-coated hybrid nanoparticles, the shell segregation is maintained even after a further decoration of the shell periphery with gold seeds; these seeds can potentially facilitate subsequent deposition of other nanostructures to enrich structural and functional diversity. These synthesis, imaging, and anal. methods for the hybrid nanoparticles of anisotropically shaped cores can potentially aid in their predictive design for materials reconfigurable from the bottom up. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Application of 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Application of 122-18-9

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Determination of Benzyl-hexadecyldimethylammonium 1,4-Bis(2-ethylhexyl)sulfosuccinate Vesicle Permeability by Using Square Wave Voltammetry and an Enzymatic Reaction was written by Cobo Solis, Airam K.;Correa, N. Mariano;Molina, Patricia G.. And the article was included in Langmuir in 2017.HPLC of Formula: 122-18-9 The following contents are mentioned in the article:

This report describes the studies performed to determine the permeability coefficient value (P) of 1-naphthyl phosphate (1-NP) through the benzyl-hexadecyldimethylammonium 1,4-bis(2-ethylhexyl)sulfosuccinate (AOT-BHD) vesicle bilayer. 1-NP was added in the external phase and must cross the bilayer of the vesicle to react with the encapsulated enzyme (alk. phosphatase) to yield 1-naphtholate (NPh^–), the product of the enzymic hydrolysis. This product is electrochem. detected, at basic pH value, by a square wave voltammetry technique, which can be a good alternative over the spectroscopic one, to measure the vesicle solutions because scattering (due to its turbidity) does not have any influence in the electrochem. signal. The exptl. data allow the authors to propose a math. model, and a value of P = (1.00 ± 0.15) × 10^-9 cm s^-1 was obtained. Also, a value of P = (2.0 ± 0.5) × 10^-9 cm s^-1 was found by using an independent technique, UV-visible spectroscopy, for comparison. It is evident that the P values obtained from both the techniques are comparable (within the exptl. error of both techniques) under the same exptl. conditions. This study constitutes the first report of the 1-NP permeability determination in this new vesicle. The authors want to highlight the importance of the introduction of a new method and the electrochem. response of the product generated through an enzymic reaction that occurs in the inner aqueous phase of the vesicle, where the enzyme is placed. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9HPLC of Formula: 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).HPLC of Formula: 122-18-9

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of an algal growth inhibition assay to determine distribution coefficients of benzalkonium ions between kaolinite and water was written by Ndabambi, Mlamuli;Kwon, Jung-Hwan. And the article was included in Ecotoxicology and Environmental Safety in 2019.Electric Literature of C25H46ClN The following contents are mentioned in the article:

Benzalkonium compounds are widely used and found in environmental samples. Due to their amphiphilic nature, it is important to know sorption coefficients to account their bioavailability. However, currently available models describing their partitioning were developed using low mol. weight homologues and it cannot be ascertained whether they are applicable to their higher mol. weight homologues. Reasons for the scarcity of data on highly sorptive compounds include the lack of reliable quantification techniques for analyzing these chems. at environmentally relevant levels. This study, therefore, reports on an algal growth inhibition assay-based method for the determination of kaolinite/water distribution coefficients for benzalkonium compounds at their environmentally relevant concentration range. Sorption to clay was computed using the difference between median effective concentration determined in a culture with kaolinite and that derived from a culture grown in standard medium. A kinetic model was used to account for uptake into algal cells and to calculate free concentrations Due to the sensitivity of the algal species, Pseudokirchneriella subcapitata, it was possible to determine distribution coefficients below micromole per L concentrations The computed distribution coefficients showed a linear increase with number of carbon atoms in the alkyl chain up to 14. The proposed bioassay-based method should be applicable to determine distribution coefficients for highly hydrophobic chems. and ionic liquids at a concentration range lower than typical anal. limits. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Electric Literature of C25H46ClN).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Electric Literature of C25H46ClN

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Fast detection of benzalkonium chloride in eye drops based on nano electrospray-portable ion trap mass spectrometry was written by Zha, Yue;Shen, Xuejing;Li, Ming. And the article was included in Fenxi Shiyanshi in 2021.Computed Properties of C25H46ClN The following contents are mentioned in the article:

In this work, a rapid detection method without using chromatog. for the determination of bactericidal component of benzalkonium chloride in com. eye drops was established by building a nanoelectrospray ionization (Nano-ESI) with portable ion trap mass spectrometer (Ion Trap MS). In the pos. ion mode, the eye drops sample was diluted and injected into the capillary for rapid qual. and quant. anal. The optimal anal. conditions were obtained as follows, the distance between the capillary outlet and the injection port was 10 mm, and the spray voltage was 2000 V, the capillary voltage, capillary temperature and ion funnel voltage were set at 5 V, 30°C and 40 V, resp. The [M-Cl]⁺ peaks of three benzalkonium chlorides were used as qual. criteria, and the solution was prepared with pure substance and then analyzed by quant. anal. of standard curves. Under the optimized conditions, the linear range of the three components in the diluted eye drops was 1-500 mg/L with good correlation coefficient (R²> 0.99). The limit of detection (LOD) of the method evaluated by 11 blank sample test results was 0.1 mg/L and the limit of quantification (LQD) was 0.33 mg/L. Compared with the ultrahigh performance liquid chromatog. (UPLC)-MS method, there was no significant difference between the quant. determination results for the actual samples, but the anal. time of the Nano-ESI MS method was shorter (2 min). Therefore, the method can be used for rapid screening and quant. determination of benzalkonium chloride as an additive in eye drops. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Computed Properties of C25H46ClN).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Computed Properties of C25H46ClN

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Facile Synthesis of Concave Cuboid Au NCs with Precisely Tunable Dimensions and Mechanistic Insight was written by Rajendra, Ranguwar;Roy, Debashree;Tripathi, Shalini;Ballav, Nirmalya. And the article was included in Langmuir in 2019.Computed Properties of C25H46ClN The following contents are mentioned in the article:

Concave cuboid (CCB) nanostructure is a member of the high-index facet (HIF) nanocrystals (NCs) family, geometrically derived from regular cuboid-excavation of each face. CCB NCs hold some addnl. characteristics such as surface cavity and sharp edges and corners as compared to its convex counterpart that makes it relatively more active in applications like electrochem. catalysis, surface enhanced Raman spectroscopy (SERS), and plasmonics. To date, there are only few reports available on the synthesis of CCB Au NCs where Br^– containing surfactants have been used as a shape directing and stabilizing agent. However, none of them led to decent yield and size tunability. Herein, we report a robust seed mediated growth strategy where cetyltrimethylammonium chloride (CTAC) and tannic acid (TA) have been used as shape-directing/stabilizing and mild reducing agents, resp. Our method not only allows the high yield fabrication of CCB Au NCs with uniform shape and size but also precise control over dimensions and degree of surface concavity. Moreover, the investigation of growth mechanism revealed that the evolution of CCB Au NCs from cylindrical nanorods (NRs) take place via arrow-headed nanorods and truncated CCB nanostructures. Furthermore, it has been observed that the presence of excess of Cl^– is indeed playing a decisive role despite the headgroup of counter cationic part of surfactant. We anticipate that our findings may pave the path to design new synthetic strategies and understand the evolution of new nanostructures. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Computed Properties of C25H46ClN).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Computed Properties of C25H46ClN

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

A fast and robust method for the extraction and analysis of quaternary alkyl ammonium compounds from soil and sewage sludge was written by Heyde, Benjamin Justus;Barthel, Anne;Siemens, Jan;Mulder, Ines. And the article was included in PLoS One in 2020.Product Details of 122-18-9 The following contents are mentioned in the article:

Alkyltrimethylammonium compounds (ATMACs), dialkyldimethylammonium compounds (DADMACs) and benzylalkyldimethylethylammonium compounds (BACs) are quaternary alkylammonium compounds (QAAC), which are released into the environment in large quantities after their use in cleaning agents and disinfectants. Despite their potential role as selective agents promoting resistance against QAACs as well as antibiotics, there is a lack of data for QAACs in soil due to the lack of sensitive anal. methods. Therefore, we present a robust and fast method for the extraction and quantification of concentrations of these compounds in soil and sewage sludge. The method is based on ultrasonic extraction (USE) with a mixture of acetonitrile and HCl followed by a solid phase extraction (SPE) cleaning step and a subsequent quantification of concentrations with high performance liquid chromatog. with mass spectrometry (HPLC-MS/MS) in multi mass reaction mode (MRM). The proposed method is suitable for the quantification of ATMACs (chain length C-8 to C-16), BACs (C-8 to C-18) and DADMACs (C-8 to C-16). The achieved limits of quantification (LOQ) range from 0.1μg kg-1 to 2.1μg kg-1. The recovery rates of spiked soil samples for non-deuterated homologues were between 47% and 57%. The anal. of sewage sludge samples and soil samples revealed that BAC-C12 was the most abundant QAAC with concentrations up to 38600μg kg-1 in sewage sludge and up to 81μg kg-1 in a Mexican soil that was irrigated with wastewater. Overall, the presented methods open perspectives for effectively studying fate and effects of QAACs in soils. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Product Details of 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Product Details of 122-18-9

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics