Heat Capacities, Speeds of Sound, and Isothermal Compressibilities of Some n-Amines and Tri-n-amines at 298.15 K

Abstract

The isothermal compressibilities at 298.15 K of primary amines (propylamine, butylamine, pentylamine, hexylamine, and octylamine) and tertiary amines (triethylamine, tripropylamine, trihexylamine, and trioctylamine) were determined from the measurements of heat capacities at constant pressure, densities, and speeds of sound.

Excess molar volumes and excess molar enthalpies of binary and ternary mixtures of 1-butanol, a tertiary amine (tri-n-butylamine or tri-n-octylamine) and n-hexane: Experimental results and ERAS-model calculations

“…The n-hexane was carefully dried over molecular sieves and all substances were degassed by applying reduced pressure for a couple of minutes and were stored in well-stoppered bottles under nitrogen atmosphere. The densities measured at T = 298.15 K and ambient pressure of the pure liquids used in this investigation are compiled in table 1 together with the literature data available [8][9][10][11][12][13][14][15][16]. These results are in good agreement with the reference data.…”

“…In those papers, the relevant model equations are given. The pure component parameters within the framework of this model which usually used to be adjusted to pure component experimental data are available from the literature sources [11,15,16,[30][31][32] and are compiled along with the binary model parameters of our calculations in table 10.…”

“…This quasi-isothermal flow [12], 0.80689 [14], 0.80823 [10], 0.80817 [15] n-Hexane 0.65504 0.65527 [11], 0.65494 [16], 0.65508 [8] calorimeter and the operating procedure have been described in detail by Malijevská et al [19]. Two ISCO LC 260D syringe pumps deliver continuously liquid components at constant volumetric flow rates into a mixing coil where the heat of mixing per unit time is measured by compensating this heat effect using an automatic control device consisting of a Peltier cooler and a control heater.…”

Volumetric and Acoustic Properties for Binary Mixtures of Dipropylene Glycol Monopropyl Ether with Alkylamines at Temperatures Between 288.15 K and 308.15 K

“…The water content, measured for each sample by Karl-Fisher titration, was always found to be less than 0.002 mass %. Furthermore, the purities of the final samples were checked by comparing the densities and speeds of sound at the desired temperatures with their corresponding values available in the literature [19][20][21][22][23][24], and are presented in Table 1.…”

Speeds of Sound and Isentropic Compressibilities of n-Alkoxyethanols and Polyethers with Propylamine at 298.15 K

“…All samples were kept in tightly sealed bottles to minimize the absorption of atmospheric moisture and CO 2 , and dried over 0.4 nm molecular sieve to reduce water content. The purity of the liquids were checked by measuring and comparing the densities at 298.15 K with their corresponding literature values [7,[9][10][11][12][13][14][15][16][17][18][19][20] in Table I. Also given in Table I are our measured or literature values of those quantities which were required in the estimation of K s,m , K E S,m , and u D .…”