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1.037 Aktuelle Fachpublikationen zum Thema temperature

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Speed of Sound Measurements in Ethanol and Benzene over the Temperature Range from (253.2 to 353.2) K at Pressures up to 30 MPa

19.03.2015 | Robin Wegge; Markus Richter; Roland Span, Journal of Chemical & Engineering Data, 2015

The speed of sound in ethanol and benzene was measured over the temperature range of (253.2 to 353.2) K with pressures up to 30MPa utilizing the double-path length pulse-echo technique. The speed of sound system was calibrated with pure water at temperatures between T = (274.15 and 353.15) K and ...

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Determination and Modeling of the Solubility of 2,4-Dimethoxybenzoic Acid in Six Pure and Isopropanol + Ethyl Acetate Mixed Organic Solvents at Temperatures From (288.15 to 323.15) K

18.03.2015 | Yuanming Tian; Jinhuan Li; Bin Wu; Yuqiang Zhang; Hongjian Tang; Qunsheng Li, Journal of Chemical & Engineering Data, 2015

In our experiment, a dynamic method was taken to measure the solubilities of the 2,4-dimethoxybenzoic acid under atmospheric pressure (p = 0.1 MPa) in ethanol, n-propanol, isopropanol, n-butanol, isobutanol, and ethyl acetate as well as in the isopropanol + ethyl acetate mixtures from (288.15 to ...

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Synthesis of Ion-Pair Amphiphiles and Calorimetric Study on the Gel to Liquid-Crystalline Phase Transition Behavior of Their Bilayers

18.03.2015 | Wei-Han Lee; Yi-Li Tang; Tzu-Chin Chiu; Yu-Min Yang, Journal of Chemical & Engineering Data, 2015

In this work, nine homologous ion-pair amphiphiles (IPAs) were successfully prepared by the precipitation or ion-exchange methods. This demonstrated the feasibility of designing and synthesizing lipid-like amphiphiles from cheap and abundant single-chained cationic and anionic amphiphiles. The ...

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New Bicyclic 1,3-Selenazine Derivatives: Distribution in Model Biological Media and Membrane Permeability

17.03.2015 | Svetlana V. Blokhina; Tatyana V. Volkova; Marina V. Ol’khovich; Angelica V. Sharapova; Alexey N. Proshin; German L. ..., Journal of Chemical & Engineering Data, 2015

2-Amino-1,3-selenazine template derivatives in the form of hydrobromides were synthesized. Phenyl, para-isopropylphenyl, and para-fluorophenyl were used as substituents. The distribution coefficients of the compounds in two-component systems modeling biological membranes, pH 2.0 and 7.4 buffer ...

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Influence of NH4Br on Solvation Behavior of Polyhydroxy Solutes in Aqueous Solutions at Different Temperatures and Atmospheric Pressure

12.03.2015 | Parampaul K. Banipal; Sonika Arti; Tarlok S. Banipal, Journal of Chemical & Engineering Data, 2015

Precise density and viscosity measurements on ternary solutions (polyhydroxy solute + NH4Br + H2O) have been carried out over the temperature range (288.15 to 318.15) K at atmospheric pressure. Partial molar volumes, V2° at infinite dilution and the Jones-Dole B-coefficients obtained from above ...

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Density, Viscosity, and Surface Tension of Liquid Phase Beckmann Rearrangement Mixtures

12.03.2015 | Klaas T. Zuidhof; Mart H. J. M. de Croon; Jaap C. Schouten; Johan T. Tinge, Journal of Chemical & Engineering Data, 2015

We have determined the density, dynamic viscosity, and surface tension of liquid phase Beckmann rearrangement mixtures, consisting of ε-caprolactam and fuming oleum. These important properties have been measured in wide ranges of both temperature and molar ratios of acid and ε-caprolactam, ...

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Volumetric Properties of Na2SO4–H2O and Na2SO4–NaCl–H2O Solutions to 523.15 K, 70 MPa

12.03.2015 | Denis Zezin; Thomas Driesner; Carmen Sanchez-Valle, Journal of Chemical & Engineering Data, 2015

The densities of aqueous solutions in the systems Na2SO4–H2O and Na2SO4–NaCl–H2O were determined experimentally at temperatures from (298.15 to 523.15) K and pressures up to 70 MPa, and over a wide range of salt concentrations (up to 5 mol·kg–1 of NaCl and up to 1.2 mol·kg–1 of Na2SO4). The ...

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Measurement and Correlation of Phase Equilibria in Aqueous Two-Phase Systems Containing Polyoxyethylene Cetyl Ether and Potassium Salt at Different Temperatures

11.03.2015 | Yang Lu; Biao Cong; Juan Han; Yun Wang; Zhenjiang Tan; Yongsheng Yan, Journal of Chemical & Engineering Data, 2015

The aqueous two-phase system (ATPS) containing the polyoxyethylene(20) cetyl ether (C56H114O21, POELE20) and three potassium salts (KOH, K2CO3, and K3PO4) at the three temperatures (288.15, 298.15, and 308.15) K were designed. The binodal data of the studied systems were determined and correlated ...

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Density, Viscosity, Speed of Sound, Bulk Modulus, Surface Tension, and Flash Point of Binary Mixtures of 2,2,4,6,6-Pentamethylheptane and 2,2,4,4,6,8,8-Heptamethylnonane at (293.15 to 373.15) K and 0.1 MPa and Comparisons with Alcohol-to-Jet Fuel

10.03.2015 | Dianne J. Luning Prak; M. Hope Jones; Jim S. Cowart; Paul C. Trulove, Journal of Chemical & Engineering Data, 2015

In this work, the physical properties of binary mixtures of 2,2,4,6,6-pentamethylheptane and 2,2,4,4,6,8,8-heptamethylnonane were measured and compared with those of alcohol-to-jet fuel. Density and viscosity were measured at temperatures ranging from (293.15 to 373.15) K, and speed of sound was ...

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Isothermal Vapor–Liquid Equilibrium Data for the 1,1,2,3,3,3-Hexafluoroprop-1-ene +1,1,2,2,3,3,4,4-Octafluorocyclobutane Binary System: Measurement and Modeling from (292 to 352) K and Pressures up to 2.6 MPa

03.03.2015 | Francois J. Conradie; Philippus L. Crouse; Xavier Courtial; Wayne M. Nelson; Isaak J. van der Walt; Deresh Ramjugernath, Journal of Chemical & Engineering Data, 2015

Isothermal vapor–liquid equilibrium data are presented for the 1,1,2,3,3,3-hexafluoroprop-1-ene and 1,1,2,2,3,3,4,4-octafluorocyclobutane binary system at (292.89, 323.02 and 352.71) K, with pressures ranging from (0.3 to 2.6) MPa. The data were measured using an apparatus based on the ...

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