Tag: 300-400

Experimental and modeling investigation of pure and mixed surfactant aggregation and associated steel corrosion inhibition in aqueous media was written by Ning, Zhiqiang;Zhu, Yakun;Free, Michael L.. And the article was included in International Journal of Electrochemical Science in 2015.Formula: C17H30BrN This article mentions the following:

The corrosion issues have led to great interest in industry and academia to control corrosion of metallic pipelines in various oilfields around the world. Among the existing corrosion control methods, surfactant inhibitors have widely been used for corrosion inhibition of metallic pipelines. One model for the prediction of corrosion inhibition efficiency of various pure surfactant and mixed surfactants in aqueous media is developed and validated. The prediction model is based on Langmuir adsorption (LA) sub-model in combination with a critical micelle concentration (cmc) prediction sub-model to create an integrated corrosion inhibition prediction model. The model derivation is introduced by using an example of mixed homologous benzalkonium chlorides (BAC) in NaCl-containing aqueous media and further validated using addnl. testing systems of pure and mixed surfactants. This developed corrosion inhibition prediction model provides a potential method to evaluate the effectiveness of various surfactants in metal corrosion inhibition under various conditions of aqueous media. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Formula: C17H30BrN).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Formula: C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Importance of hydrophobic interactions in the single-chained cationic surfactant-DNA complexation was written by Lopez-Lopez, Manuel;Lopez-Cornejo, Pilar;Martin, Victoria Isabel;Ostos, Francisco Jose;Checa-Rodriguez, Cintia;Prados-Carvajal, Rosario;Lebron, Jose Antonio;Huertas, Pablo;Moya, Maria Luisa. And the article was included in Journal of Colloid and Interface Science in 2018.Recommanded Product: 104-73-4 This article mentions the following:

The goal of this work was to understand the key factors determining the DNA compacting capacity of single-chained cationic surfactants. Fluorescence, zeta potential, CD, gel electrophoresis and AFM measurements were carried out to study the condensation of the nucleic acid resulting from the formation of the surfactant-DNA complexes. The apparent equilibrium binding constant of the surfactants to the nucleic acid, K_app, estimated from the exptl. results obtained in the ethidium bromide competitive binding experiments, can be considered directly related to the ability of a given surfactant as a DNA compacting agent. The plot of ln(K_app) vs. ln(cmc), cmc being the critical micelle concentration, for all the bromide and chloride surfactants studied, is a reasonably good linear correlation. Hydrophobic interactions mainly control the surfactant DNA compaction efficiency. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Recommanded Product: 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Recommanded Product: 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The role of ammonium oxidising bacteria (AOB) in ionic liquid 1-dodecylpyridinium chloride removal was written by Chua, Feng Jun Desmond;Zhou, Yan. And the article was included in Applied Microbiology and Biotechnology in 2019.Application In Synthesis of 1-Dodecylpyridin-1-ium bromide This article mentions the following:

Ionic liquids (IL) have emerged as the next-generation “green” solvent that can replace traditional organic solvent due to properties such as high thermal stability and no vapor pressure. However, their increased usage inevitably allows them to find their way into the environment. The objective of this study was to evaluate the role of autotrophic ammonia-oxidising bacteria (AOB) in the potential removal of 1-dodecylpyridinium chloride ([DPy]⁺Cl) in both short- and long-term studies. In short-term batch experiments, it was observed that a notable amount of [DPy]⁺ can be removed by the AOB culture with the removal mechanism being biodegradation and absorption, with the latter playing a greater role. It was also found that [DPy]⁺ can be released back into the liquid phase when AOB’s preferred substrate, NH₃, was present. In the long-term study, [DPy]⁺Cl was successfully biodegraded and a total of nine transformation products were identified. The biodegradation pathway was also proposed. This study demonstrated that [DPy]⁺Cl can be biol. transformed by enriched AOB culture and the accumulation of the byproduct did not show long-term neg. impact on AOB activities. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Application In Synthesis of 1-Dodecylpyridin-1-ium bromide).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Application In Synthesis of 1-Dodecylpyridin-1-ium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Sphere to rod transitions in homologous alkylpyridinium salts: A Stauff-Klevens-type equation for the second critical micelle concentration was written by Gonzalez-Perez, A.;Varela, L. M.;Garcia, M.;Rodriguez, J. R.. And the article was included in Journal of Colloid and Interface Science in 2006.Electric Literature of C17H30BrN This article mentions the following:

The authors analyze the dependence of the 2nd critical micelle concentration (2nd cmc) of ionic amphiphiles on the number of atoms in the hydrocarbon mol. chain, n_c. A mol. thermodn. model for the interaction energy between the end caps of rodlike micelles, g(N), is introduced and the linear dependence of this object on n c analyzed, thus leading to a Stauff-Klevens-like behavior of the 2nd cmc. The predictions agree with previously reported data for n-alkyldimethylbenzylammonium chloride (C_nBACl) for n-alkylpyridinium chloride (C_nPyCl) and n-alkyltrimethylammonium bromide (C_nTABr) at 35°. These conclusions are reinforced by the conductivity, d., and ultrasound velocity measurements of the 2nd cmc of several C_nPyCl (n = 12, 14, 16) and n-alkylpyridinium bromides (C_nPyBr, n = 12, 14, 15, 16) presented. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Electric Literature of C17H30BrN).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Pyridine derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.Electric Literature of C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Antifungal characteristics of N,N’-hexamethylenebis (4-carbamoyl-1-decylpyridinium bromide) was written by Okazaki, Kiyo;Yoshida, Munehiro;Mayama, Mari;Shirai, Akihiro;Maeda, Takuya;Nagamune, Hideaki;Kourai, Hiroki. And the article was included in Biocontrol Science in 2006.Application In Synthesis of 1-Dodecylpyridin-1-ium bromide This article mentions the following:

A bis-quaternary ammonium compound (bis-QAC), N,N’-hexamethylenebis(4-carbamoyl-1-decylpyridinium bromide) (D-38), exhibited a wide antifungal spectrum and a strong activity against sixteen strains of fungi including nine strains isolated from various kinds of food. The antifungal activity was higher than that of N-dodecylpyridinium iodide, a typical mono-QAC, and that of the commonly used fungicide, 2-(4-thiazolyl) benzimidazole. The activity of D-38, however, was comparatively low when it was measured by the agar dilution method. It is considered that the hydrophobic D-38 mols., having two long alkyl chains, interacted with the agar medium, and therefore showed lower activity results. On the other hand, the activity of D-38 against Aspergillus niger IFO 6342 was not significantly influenced by temperature, pH and the initial spore concentration These results indicate that bis-QACs can exhibit a high antifungal activity whether or not the environmental conditions change. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Application In Synthesis of 1-Dodecylpyridin-1-ium bromide).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Pyridine groups exist in countless molecules, and their applications include catalysis, drug design, molecular recognition, and natural product synthesis.Application In Synthesis of 1-Dodecylpyridin-1-ium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of the coagulation titration method for quantitative determination of the content of anion-active emulsifiers in latex was written by Poyarkova, T. N.;Sotnikova, E. V.;Kudrina, G. V.. And the article was included in Russian Journal of Applied Chemistry in 2013.Computed Properties of C17H30BrN This article mentions the following:

Fast quant. determination of the content of emulsifiers of the alkyl sulfate type in latexes by their titration in a strongly diluted (1: 10⁴) state with a solution of a cation-active surfactant (cetylpyridinium chloride) was achieved. The titration end point was determined as the abscissa of the point of a maximum (cm) in the curve describing the dependence of the “minute turbidity” of the latex on the cetylpyridinium chloride concentration The effect of the alkyl chain length of the cation-active surfactant on the value of cm at the titration end point was studied. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Computed Properties of C17H30BrN).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Computed Properties of C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Dual Functional Salts of Benzo[1.2.3]thiadiazole-7-carboxylates as a Highly Efficient Weapon Against Viral Plant Diseases was written by Smiglak, Marcin;Lewandowski, Piotr;Kukawka, Rafal;Budziszewska, Marta;Krawczyk, Krzysztof;Obrepalska-Steplowska, Aleksandra;Pospieszny, Henryk. And the article was included in ACS Sustainable Chemistry & Engineering in 2017.Recommanded Product: 1-Dodecylpyridin-1-ium bromide This article mentions the following:

Nowadays, plant protection against viral diseases is one of the most challenging tasks faced by modern agriculture. One of the possible ways of plant protection is utilization of systemic acquired resistance phenomenon. In this approach biol. or chem. factors interact with plants and stimulate their immune system against infections before infection occurs. This paper presents 11 ionic derivatives of benzo[1.2.3]thiadiazole-7-carboxy-S-Me ester, a synthetic plant resistance inducer, with counterions specifically selected to modify the phys. and biol. properties of the resulting salts. We present the synthesis methods, as well as phys. and biol. properties, of these newly obtained anionic bifunctional salts. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Recommanded Product: 1-Dodecylpyridin-1-ium bromide).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Recommanded Product: 1-Dodecylpyridin-1-ium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Micellar, interfacial and fluorescence investigation on binary mixtures of dodecyl cationic surfactants in aqueous media was written by Moulins, Jonathan R.;Harris, Adam A.;Dean, Rebecca K.;Moore, Stephanie A.;Palepu, Rama M.. And the article was included in Colloids and Surfaces, A: Physicochemical and Engineering Aspects in 2007.Product Details of 104-73-4 This article mentions the following:

The critical micelle concentration (CMC) of binary mixtures of C₁₂-triphenyl phosphonium, pyridinium and tri-Me ammonium bromides were determined employing conductometry, surface tensiometry and fluorescence techniques. Binary mixtures of C₁₂ phosphonium bromide with C₁₂ tri-Me ammonium and pyridinium bromide surfactants exhibited 2nd breaks due to the structural micellar transition, and are supported by conductometric and fluorometric methods. The values of surface excess, min. area of the C₁₂ surfactants at the cmc and Gibbs energy of adsorption were evaluated. The ideality/nonideality of the mixing was analyzed using regular solution theory (RST) to obtain the composition of the mixed micelle and the interaction parameter (β ^m) to evaluate the strength of interactions of surfactants in the mixed micelles. The tensiometric measurements were also analyzed to obtain the interaction parameter (β ^σ) for the mixed monolayer at the air/water interface. Activity coefficients and the excess free energy of mixing were also determined In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Product Details of 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Product Details of 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Ecotoxicity of Pyridinium Based ILs towards Guppy Fish and Four Bacterial Strains was written by Hafez, Nehal Farouk Mohamed;Abdul Mutalib, Mohamed Ibrahim;Bustam, Mohammad Azmi B.;El-Harbawi, Mohanad;Leveque, Jean-Marc. And the article was included in Procedia Engineering in 2016.SDS of cas: 104-73-4 This article mentions the following:

Ionic liquids (ILs) are molten salts that possess low m.ps. and wide solvation properties. ILs attracted the attention of the academic and industrial professionals due remarkable properties such as low vapor pressure and thermal stability which make them more environmentally friendly as they can replace volatile organic solvents (VOCs) in many organic reactions. This has brought attention to broaden this research area to overcome the harmful emissions from VOCs in industry. Pyridinium ILs have a wide range of applications in various domains such as material sciences, organic and bioorganic syntheses, biotechnologies, nanotechnol. and Enhanced Oil Recovery (EOR). However, available toxicity data in literature is yet scarce and hampers a large scale development. In this study, 18 synthesized ILs were tested against guppy fish and four bacterial strains. Two gram neg. bacteria: Salmonella enterica, Vibrio cholera and two gram pos. bacteria: Listeria monocytogenes, Staphylococcus aureus were chosen to represent each category of bacteria. Fish test was conducted using OECD guidelines and the “96-well plate” procedure was adopted for the bacterial test using (CLSI M100-S24). Results showed that long alkyl chain length ILs showed higher toxicity than short alkyl chain analogs on all the targeted strains. The highest toxic effect exhibited by pyridinium ILs towards guppy fish was moderately toxic and the rest varied between relatively harmless and practically nontoxic. The highest antibacterial effect indicated slightly toxic effect towards Staphylococcus aureus obtaining EC₅₀ = 19.3 mg/L. In most cases, pyridinium ILs indicated relatively harmless and practically harmless effects towards bacteria after comparing the EC₅₀ values obtained with Passino and Smith 1987 hazard ranking. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4SDS of cas: 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. SDS of cas: 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

A Thermodynamic Analysis of Charged Mixed Micelles in Water was written by Maeda, Hiroshi. And the article was included in Journal of Physical Chemistry B in 2005.COA of Formula: C17H30BrN This article mentions the following:

A thermodn. anal. is presented for elec. charged mixed micelles in water on the basis of the Gibbs-Duhem relation proposed by Hall in combination with the information on the degree of counterion binding. The proposed analyses are shown to work well for both ionic/nonionic mixed micelles and those consisting of ionic surfactants of like charges. Conclusions for ionic/nonionic mixed micelles are as follows. (1) The contribution from counterions is significant. (2) In media of low ionic strengths, the counterion concentration varies with the micellar mole fraction of the ionic species x. The dependency of the activity coefficients and the excess free energy on x is significantly influenced by this effect, but it can be corrected to a large extent in terms of the Corrin-Harkins relation. (3) The regular solution theory (RST) is not always valid even when the excess free energy is described well with the RST expression unless the observed range of the micelle composition is wide enough. (4) The RST overestimates x and underestimates the activity coefficient of the ionic species when applied to the mixed micelles to which it is inapplicable. For the ionic mixed micelles consisting of surfactants of like charges, the Lange-Shinoda approach is shown to be consistent with the present anal. in terms of the Gibbs-Duhem relation, but Motomura’s approach is not exact but approx. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4COA of Formula: C17H30BrN).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Pyridine derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.COA of Formula: C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem