The temperature variation of orthobaric density difference in liquid‐vapour systems. III. Alcohols

Abstract

The density of a variety of alcohols has been measured over ranges of temperature below and above the boiling point. It is shown that the variation of orthobaric density difference with temperature may be represented fairly well by the Verschaffelt equation. In general the exponent of the equation is substantially lower than that found for normal liquids, and its value depends on the temperature range examined.

Excess molar volumes and viscosity behaviour of binary mixtures of aniline/or N,N-dimethylaniline with imidazolium ionic liquids having triflate or bistriflamide anion

“…The relative standard uncertainty 2.2 % was accepted for the mixture properties. Figure 1 -Comparison of the current experimental density values ( )vs. temperaturewith literature valuesfor pure: (a) aniline-( )Vogel et al [39]; ( )Sumer et al [40];( )Katz et al [41];( )Kumar et al [42];( )Almasi et al [43];( )Costello et al [44]; (⌧) MacNeilet al [45]; ( ) Alonso et al [29]; (b)N,N-dimethylaniline -( )Costello et al [44]; ( )Vogel et al [39]; ( ) Oskoei et al [46]; ( ) Saleh et al [47]; ( ) Pandiyan et al [48]; ( )Katz et al [41]; ( )Kumar et al [42];(⌧) Radwanet al [49]; ( ) Kondaiah et al [50]; ( ) MacNeil et al [45]; ( )Zubinand Naved [33];(c) [bmim][OTf] -( )Vercher et al [51];( )Montalbán et al [52];( )Soriano et al [53];( )Tokuda et al [54];( )Gardas et al [55]; ( ) Fredlake et al [56]; (⌧) Klomfar et al [57];( )Shamsipur et al [58];( )Mbondo et al [59]; ( )Batista et a. [60];( )McHale et al [61]; () Arce et al [34];(d) [bmim][NTf2] -( )Hiraga et al [62]; ( )Kanakubo et al [63]; ( ) de Castro et al [64]; ( ) Jacquemin et al [65]; ( ) Widowati et al [66]; ( ) Currás et al [67]; ( ) Azevedo et al …”

Density measurements of liquid 2-propanol at temperatures between (280 and 393)K and at pressures up to 10MPa

“…The AAD with respect to the 428 points including those measured and shown in the literature is about 0.1%. A Bias value lower than 0.02% shows a good balance of the present Golubev et al [12] Nikam et al [31] Ambrose et al [7] Islam and Quadri [23] Oswal and Putta [32] Aminabhavi et al [17] Khimenko et al [24] Paez and Contreras [33] Aminabhavi and Aralaguppi [18] Khimenko et al [25] Sakurai [34] Aminabhavi and Gopalakrishna [19] Krestov et al [26] Sovilj [35] Boned et al [8] Ku and Tu [27] Tashima and Arai [36] Contreras [20] Kubota et al [13] Tu et al [37] Costello and Bowden [21] Lee and Lin [28] Wei and Rowley [38] Egorov et al [22] Mato and Coca [29] Yaginuma et al [15] Golubev and Vagina [10] Moha-Ouchane et al [9] Zuniga-Moreno and Galicia-Luna [16] Golubev et al [11] Nagata et al [30] P / MPa 273 -300 K measurements with respect to all the available data for 2-propanol within the investigated range of temperature and pressure. The densities calculated with the developed BWR equation basically agree with the literature values within their claimed experimental uncertainty.…”

“…3 [20] Kubota et al [13] Tu et al [37] Costello and Bowden [21] Lee and Lin [28] Wei and Rowley [38] Egorov et al [22] Mato and Coca [29] Yaginuma et al [15] Golubev and Vagina [10] Moha-Ouchane et al [9] Zuniga-Moreno and Galicia-Luna [16] Golubev et al [11] Nagata et al [30] P / MPa T / K In this work, density measurements in the liquid region from T = (280 to 393) K and from atmospheric pressure up to 10 MPa have been carried out using a ''open circuit method" [39] taking advantage of a vibrating tube densimeter (VTD). In the ''open circuit method", the apparatus, during the measuring operations, exchanges some fluid mass with the surroundings.…”

Experimental study of the isochoric heat capacity and coexistence-curve singular diameter of sec-butanol near the critical point and Yang-Yang anomaly strength

“…Recently, the critical exponent ¼ 0 has been derived by Zhang [30] and Zhang and March [31] from the two conjectures for 3D simple orthorhombic Ising lattices (exact solution), which means that C V shows logarithmic singularity at the critical point. We applied the logarithmic singularity law [35]; -this work; -Ambrose and Townsend [35]; D -Dannhauser and Bahe [41]; h -Hales and Ellender [42]; Â -Costello and Bowden [43]; S -Kuss [44]; þ -Carrara and Ferrari [45]; g -Pickard and Kenyon [46,47];m -Cymarnyi and Palaguta [48]. together with the values calculated from scaling power law (10), and measured data are presented in Figure 5.…”