Journal of Solution Chemistry最新文献_第9页

Evaluation of Distribution and Partition Coefficients of Levulinic Acid in Octanol-Water System at 298.15 K 298.15 K时乙酰丙酸在辛醇-水体系中的分布及分配系数评价

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-11-28 DOI: 10.1007/s10953-023-01345-5

Nur Aainaa Syahirah Ramli, Harissa Rania, Nur Azmina Roslan, Fadzlina Abdullah

{"title":"Evaluation of Distribution and Partition Coefficients of Levulinic Acid in Octanol-Water System at 298.15 K","authors":"Nur Aainaa Syahirah Ramli, Harissa Rania, Nur Azmina Roslan, Fadzlina Abdullah","doi":"10.1007/s10953-023-01345-5","DOIUrl":"10.1007/s10953-023-01345-5","url":null,"abstract":"<div>Levulinic acid is a promising building block chemical with various applications, such as in pharmaceuticals and cosmetics. The key parameters used for assessing the environmental fate, risk assessment and toxicity of a compound in these applications include partition and distribution behavior of the compound. The partition and distribution coefficients can be measured from the ratio of the compound concentration in 1-octanol to the concentration in water at equilibrium. In this study, the distribution and partition behavior of levulinic acid in octanol-water system were determined experimentally using a simple and inexpensive shake flask approach according to OECD 107 via UV–Vis spectroscopy at 298.15 K. The neat and mutually saturated solvents were applied in the determination of distribution and partition behavior. The distribution coefficient (log D) using neat solvents (octanol-water) and saturated solvents (octanol(water−saturated)-water(octanol−saturated)) were determined, and the partition coefficient (log P) was calculated accordingly based on the relationship between log D and log P for weakly acidic compounds. In octanol-water and octanol(water−saturated)-water(octanol−saturated) system, the log D of levulinic acid were determined to be − 0.574 and − 0.816, while the log P were − 0.554 and − 0.790, respectively. The precision of the method was established with variation in the measurement less than 0.03 for both log D and log P. The negative value of log P indicates the preference of levulinic acid for the water phase over the octanol phase. The results from this study can be comprehended in product formulation and design related to levulinic acid as well as assessing the environmental fate.</div>","PeriodicalId":666,"journal":{"name":"Journal of Solution Chemistry","volume":"53 3","pages":"471 - 485"},"PeriodicalIF":1.4,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mixed-Ligand Nickel(II) Complexes with Histidine and Cysteine in Aqueous Solution: Thermodynamic Approach 水溶液中组氨酸和半胱氨酸混合配体镍(II)配合物:热力学方法

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-11-27 DOI: 10.1007/s10953-023-01337-5

Dmitrii Pyreu, Sergei Gridchin

引用次数: 0

Solubility of 2-Hydroxybenzoic Acid in Pseudo-Binary Mixtures of Choline Chloride/Propylene Glycol Deep Eutectic Solvent + Water at 293.15–313.15 K 293.15 ~ 313.15 K时2-羟基苯甲酸在氯化胆碱/丙二醇深度共晶溶剂+水伪二元混合物中的溶解度

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-11-22 DOI: 10.1007/s10953-023-01336-6

Erfan Babaei, Parisa Jafari, Elaheh Rahimpour, Jalal Hanaee, Abolghasem Jouyban

引用次数: 0

Improved Solubility of Baclofen Using Suitable Coformers 使用合适的共聚物提高巴氯芬的溶解度

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-11-06 DOI: 10.1007/s10953-023-01333-9

Elaheh Pourabdollah, Elaheh Rahimpour, Abolghasem Jouyban, Anahita Fathi Azarbayjani

{"title":"Improved Solubility of Baclofen Using Suitable Coformers","authors":"Elaheh Pourabdollah, Elaheh Rahimpour, Abolghasem Jouyban, Anahita Fathi Azarbayjani","doi":"10.1007/s10953-023-01333-9","DOIUrl":"10.1007/s10953-023-01333-9","url":null,"abstract":"<div>This work presents the application of L-tartaric acid (L-TA), ascorbic acid (AA), and L-carnitine (L-CAR) as a safe and non-toxic alternative agent to enhance the aqueous solubility of baclofen (BAC). The solvent evaporation method was employed for co-crystallization in three stoichiometric ratios of the drug, coformer (1:1, 1:3, 1:5) and formulations were confirmed by X-ray diffractometry (XRD), differential scanning calorimetry (DSC), and Fourier transform infrared (FT-IR). DSC study revealed the presence of both endothermic and exothermic peaks in compounds containing AA and L-TA. With respect to the BAC, L-TA and BAC, AA, the appearance of new diffraction peaks that do not overlap with un-processed BAC may be the implication of a new structure. The intensity of some diffraction peaks disappeared or reduced significantly which may also imply the formation of a new crystal phase. The solubility of the multicomponents increased and surpassed the solubility of BAC. Overall, the new compounds show significantly higher drug solubility whereas their physical mixtures only demonstrate a marginal increase in BAC solubility. The high solubility records of BAC, AA and BAC, L-TA evidence the marked difference in solubility of the new compounds with respect to their physical mixtures. The saturation solubility of BAC, L-CAR compound did not show any improvement relative to the un-processed BAC. These findings confirm that a new crystal phase may not have been obtained during the co-crystallization of BAC and L-CAR.</div>","PeriodicalId":666,"journal":{"name":"Journal of Solution Chemistry","volume":"53 2","pages":"341 - 353"},"PeriodicalIF":1.4,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135590097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement and Prediction of Phase Equilibria of Quaternary System LiCl–KCl–SrCl2–H2O at 273.2 K and its Applications 273.2 K 下 LiCl-KCl-SrCl2-H2O 四元体系相平衡的测量和预测及其应用

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-10-28 DOI: 10.1007/s10953-023-01328-6

Hu Chen, Shi-Hua Sang, Chun-Xia He, Xiao-Feng Guo, Hong-Bao Ren

{"title":"Measurement and Prediction of Phase Equilibria of Quaternary System LiCl–KCl–SrCl2–H2O at 273.2 K and its Applications","authors":"Hu Chen, Shi-Hua Sang, Chun-Xia He, Xiao-Feng Guo, Hong-Bao Ren","doi":"10.1007/s10953-023-01328-6","DOIUrl":"10.1007/s10953-023-01328-6","url":null,"abstract":"<div>The underground brines in the Sichuan Basin of China are rich in lithium, potassium, strontium, chlorine, etc. In order to fully develop and utilize these brine resources, it is necessary to carry out phase equilibrium research about the quaternary system LiCl–KCl–SrCl2–H2O and develop a reasonable lithium extraction process. The quaternary system LiCl–KCl–SrCl2–H2O at 273.2 K were determined using the isothermal dissolution equilibrium method. As a result, the corresponding phase diagrams were drawn based on the data. The phase diagram shows that the quaternary system LiCl–KCl–SrCl2–H2O has no double salt or solid solution at 273.2 K and there are two invariant points, five univariate curves and four solid phase crystallization fields, which are LiCl·2H2O, SrCl2·2H2O, SrCl2·6H2O and KCl. Furthermore, Pitzer’s model was used to predict the solubility of salts in the quaternary system. The calculated values are in good agreement with the experimental ones. Finally, combined with isothermal evaporation method and the phase diagram of the quaternary system, a brine evaporation process was designed.\u0000</div>","PeriodicalId":666,"journal":{"name":"Journal of Solution Chemistry","volume":"53 2","pages":"294 - 313"},"PeriodicalIF":1.4,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136233726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[(EtO)3Si(CH2)3N+H3][CH3COO−] as Basic Ionic Liquid Catalyst Promoted Green Synthesis of Benzo[a]pyrano[2,3-c]phenazine Derivatives in Homogenous Solution 以[(EtO)3Si(CH2)3N+H3][CH3COO-]为碱性离子液体催化剂在均相溶液中促进苯并[a]吡喃并[2,3-c]吩嗪衍生物的绿色合成

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-10-26 DOI: 10.1007/s10953-023-01332-w

Farhad Shirzaei, Hamid Reza Shaterian

引用次数: 0

Binary and Ternary Oxovanadium (IV) Complexes with Picolinic Acid and Some Potentially Bidentate Amino Acids Studied by Potentiometric Measurements in 1.0 mol·dm−3 NaCl at 25 °C 在 25 °C 的 1.0 mol-dm-3 NaCl 溶液中通过电位测量法研究吡啶甲酸和一些潜在双齿氨基酸与氧化钒 (IV) 的二元和三元络合物

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-10-23 DOI: 10.1007/s10953-023-01331-x

Sabrina Rodríguez, Mary Lorena Araujo, Edgar Del Carpio, Lino Hernández, Vito Lubes

引用次数: 0

Volumetric and Dielectric Properties in Liquid Phase of Dimethyl Ether–Ethanol at (293.2–313.2) K and 1.00 MPa 二甲醚-乙醇在 (293.2-313.2) K 和 1.00 MPa 下的液相体积特性和介电特性

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-10-21 DOI: 10.1007/s10953-023-01329-5

Taka-aki Hoshina, Kazunori Sato, Masaki Okada, Tomoya Tsuji, Toshihiko Hiaki

{"title":"Volumetric and Dielectric Properties in Liquid Phase of Dimethyl Ether–Ethanol at (293.2–313.2) K and 1.00 MPa","authors":"Taka-aki Hoshina, Kazunori Sato, Masaki Okada, Tomoya Tsuji, Toshihiko Hiaki","doi":"10.1007/s10953-023-01329-5","DOIUrl":"10.1007/s10953-023-01329-5","url":null,"abstract":"<div>Density and dielectric spectra have been measured in the liquid phase of dimethyl ether (DME)–ethanol by an oscillating U-tube densimeter and a complex dielectric spectrometer under 1.00 MPa. The density was measured at 303.15 and 313.15 K and converted to the excess molar volume. The excess molar volumes were no smaller than − 0.880 and − 0.909 cm3·mol–1 at 303.15 and 313.15 K, respectively. The mole fraction dependence can be correlated with the Redlich–Kister equation, whose minimum was found to be around 0.58 for the mole fraction of DME. The dielectric constant and the dielectric relaxation time were evaluated from the complex dielectric spectra in the frequency range from 0.5 to 18 GHz at (293.2–313.2) K and 1.00 MPa. The dielectric constants and the relaxation time were decreased with the mole fraction of DME, and the latter tended to be around 25 ps in the mole fraction range higher than 0.6. The logarithmic dielectric constants can be correlated with a similar function to the Hildebrand equation with the volume fraction. The effective Kirkwood g-factor was evaluated at 293.2–313.2 K and 1.00 MPa. The g-factors were given by two linear functions crossed around 0.6 for the mole fraction of DME. Considering an atomic composition (C2H6O), the molecular sizes are not so different for DME and ethanol. Then, the solution structure was thought to be microscopically changed around 0.6 for the mole fraction of DME. The mole fraction will be utilized to switch the solubility to extract amphipathic compounds.</div>","PeriodicalId":666,"journal":{"name":"Journal of Solution Chemistry","volume":"53 2","pages":"278 - 293"},"PeriodicalIF":1.4,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135512085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Investigations on the Thermophysical Properties of Binary Systems of Fatty Acid Esters + Dimethyl Carbonate 脂肪酸酯+碳酸二甲酯二元体系的热物理性质研究

IF 1.4 4区化学

Journal of Solution Chemistry Pub Date : 2023-10-07 DOI: 10.1007/s10953-023-01327-7

Xiang Gao, Biyuan Hong, Meiyu Zhang, Dan Li

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Response to Comment on “Thermodynamic Data for Sn(IV) Species in Aqueous Solution: A Matter of Controversy and Error” (https://doi.org/10.1007/s10953-023-01323-x) 对“水溶液中Sn（IV）物种的热力学数据：一个有争议和错误的问题”评论的回应(https://doi.org/10.1007/s10953-023-01323-x)

IF 1.2 4区化学

Journal of Solution Chemistry Pub Date : 2023-10-07 DOI: 10.1007/s10953-023-01330-y

Peter M. May, Montserrat Filella

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