Heat Capacities and Derived Thermodynamic Functions of 1-Propanol between 10 K and 350 K and of 1-Pentanol between 85 K and 370 K

Abstract

Molar heat capacities of 1-propanol were measured from 10 K to 350 K, and S abs,m(T) and H m(T)−H m(0) were calculated. The enthalpy of fusion was found to be (5400 ± 10) J·mol-1; the triple-point temperature was calculated as (148.71 ± 0.02) K. Similar measurements were made on 1-pentanol between 85 K and 370 K; the enthalpy of fusion was found to be (10510 ± 20) J·mol-1; the triple-point temperature was (195.6 ± 0.1) K. The molar heat capacity of the liquid 1-alcohols with a number of carbon atoms n in the linear chain between 3 and 22 can be described by C p,l(n,T) = {99.38 + 17.769n + 0.05199n(T/K) − 0.8742(T/K) + 1265.2/(T/K) + 0.0022603(T/K)2} J·K-1·mol-1, with a standard deviation of 3.1 J·K-1·mol-1. The main deviations occur above 370 K, where the experimental data start to flatten. Plotting the experimental heat capacity data for the 1-alcohols with a carbon number in the chain between 3 and 22 on a mass basis showed that all curves pass through almost the same value around 290 K.

Thermophysical and volumetric study of mixtures {p-cymene + propan-1-ol} at several temperatures and atmospheric pressure. Modeling with COSMO-RS

“…Furthermore, in that figure, other bibliographic values have been depicted as well [38][39][40][41]. It can be seen that the molar heat capacities here reported are in good agreement with the literature data.…”

Experimental densities and derived thermodynamic properties of liquid propan-1-ol at temperatures from 298 to 423K and at pressures up to 40MPa

“…(∂ 2 p/∂ 2 T) has small absolute values (for example for propan-1-ol in the liquid phase it is within 0.8 × 10 −3 to 0.2 × 10 −2 MPa/K 2 , see Fig. 5) and is often known with [121]; ( ), [123]; (×), [122]; ( ), [130]; (+), [134]; ( ), [120]; (♦), [106]; ( ), [136]; ( ), [118]; ( ), [135]; ( ), [137]; ( ), [141]; ( ), [52]; ( ), [142]; (---), this work calculated with Tait EOS (18); (----), Khasanshin [92]; (·········), Marczak et al [47]; (-· -· -·), Rubini et al [131]. (Right): (᭹), [55]; ( ), [142]; (---), this work calculated with Tait EOS (18).…”

Thermodynamic, crystallographic, and dielectric study of the nature of glass transitions in cyclo-octanol

“…As for the specific heat obtained by means of the AdCtechnique, a home-made adiabatic calorimeter ͑the name of the designation in the Chemical Thermodynamics Group Laboratory is CAL V͒ described elsewhere 36,37 was used. The vessel was filled with a mass of about 10 g in a controlled atmosphere of nitrogen gas.…”