Tautomeric and Microscopic Protonation Equilibria of Anthranilic Acid and Its Derivatives [0.03%]
邻氨基苯甲酸及其衍生物的互变异构和微观质子化平衡研究
Lidia Zapała,Elżbieta Woźnicka,Jan Kalembkiewicz
Lidia Zapała
The acid-base chemistry of three zwitterionic compounds, namely anthranilic (2-aminobenzoic acid), N-methylanthranilic and N-phenylanthranilic acid has been characterized in terms of the macroconstants Ka1, Ka2, the isoelectric point pHI, t...
Densities, Excess Molar Volumes, and Thermal Expansion Coefficients of Aqueous Aminoethylethanolamine Solutions at Temperatures from 283.15 to 343.15 K [0.03%]
水溶液中氨基乙基乙醇胺的密度、摩尔剩余体积和热膨胀系数（283.15至343.15K）
Marcin Stec,Adam Tatarczuk,Dariusz Spiewak et al.
Marcin Stec et al.
The densities of aqueous mixtures of aminoethylethanolamine (CAS #000111-41-1) were measured over the entire compositional range at temperatures of 283.15-343.15 K. The results of these measurements were used to calculate excess molar volum...
Partial Molar Volumes of 15-Crown-5 Ether in Mixtures of N, N-Dimethylformamide with Water [0.03%]
15-冠-5醚在N，N-二甲基甲酰胺和水混合物中的偏摩尔体积
Magdalena Tyczyńska,Małgorzata Jóźwiak
Magdalena Tyczyńska
The density of 15-crown-5 ether (15C5) solutions in the mixtures of N,N-dimethylformamide (DMF) and water (H2O) was measured within the temperature range 293.15-308.15 K using an Anton Paar oscillatory U-tube densimeter. The results were us...
Solubility of Omeprazole Sulfide in Different Solvents at the Range of 280.35-319.65 K [0.03%]
奥美拉唑硫化物在不同溶剂中280.35-319.65K温度范围内的溶解度研究
Yihua Li,Wenge Yang,Tuan Zhang et al.
Yihua Li et al.
Solubility data were measured for omeprazole sulfide in ethanol, 95 mass-% ethanol, ethyl acetate, isopropanol, methanol, acetone, n-butanol and n-propanol in the temperature range from 280.35 to 319.65 K by employing the gravimetric method...
Modelling of the Critical Micelle Concentration of Cationic Gemini Surfactants Using Molecular Connectivity Indices [0.03%]
基于分子连接性指数的双子型阳离子表面活性剂临界胶束浓度的经验模型式研究
Anna Mozrzymas
Anna Mozrzymas
Modelling of the critical micelle concentrations (cmc) using the molecular connectivity indices was performed for a set of 21 cationic gemini surfactants with medium-length spacers. The obtained model contains only the second-order Kier and...
Stabilities of the Divalent Metal Ion Complexes of a Short-Chain Polyphosphate Anion and Its Imino Derivative [0.03%]
短链多磷酸根及其亚胺衍生物金属离子配位化合物的稳定性研究
Hideshi Maki,Masahiko Tsujito,Makoto Sakurai et al.
Hideshi Maki et al.
Abstract: The stability constants of ML-type complexes of the two linear triphosphate ligand anion analogues triphosphate ([Formula: see text]) and diimidotriphosphate ([Formula: see text]) were investigated thermodynamic...
Equilibrium Studies of Dibutyltin(IV)-Zwitterionic Buffer Complexation [0.03%]
二丁基锡(IV)与双离子缓冲剂络合的平衡研究
M A El-Gahami,H M Albishri
M A El-Gahami
Equilibrium studies in aqueous solution are reported for dibutyltin(IV) (DBT) complexes of the zwitterionic buffers "Good's buffers" Mes and Mops. Stoichiometric and formation constants of the complexes formed were determined at different t...
K G Sekar,R V Sakthivel
K G Sekar
The kinetics of oxidation of cyclanols, viz., cyclohexanol, cyclopentanol, cycloheptanol and cyclooctanol by quinaldinium fluorochromate has been studied in aqueous acid medium at 313 K (±0.1 K). The cyclanols were converted to the corresp...
Viscometric Studies in Dilute Solution Mixtures of Chitosan and Microcrystalline Chitosan with Poly(vinyl alcohol) [0.03%]
壳聚糖与微晶壳聚糖和聚乙烯醇稀溶液的 viscometric 研究
Katarzyna Lewandowska
Katarzyna Lewandowska
The viscosity behavior of aqueous mixtures formed by a polyelectrolyte (A) and a neutral polymer (B), such as chitosan/poly(vinyl alcohol) (Ch/PVA) and microcrystalline chitosan/poly(vinyl alcohol) (MCCh/PVA), have been investigated at 25 ...
Intrinsic 31P NMR Chemical Shifts and the Basicities of Phosphate Groups in a Short-Chain Imino Polyphosphate [0.03%]
短链亚氨基多磷酸酯的磷基本性和固有31P核磁共振化学位移研究
Hideshi Maki,Masahiko Tsujito,Tetsuji Yamada
Hideshi Maki
Abstract: The stepwise protonation constants of two linear triphosphate ligand anions, triphosphate, [Formula: see text] and di-imidotriphosphate, [Formula: see text], were investigated by potentiometric titration, and th...