Densities, Apparent Molar Volume, Expansivities, Hepler’s Constant, and Isobaric Thermal Expansion Coefficients of the Binary Mixtures of Piperazine with Water, Methanol, and Acetone at T = 293.15 to 328.15 K

Table 2

Comparison of the densities of the pure solvents measured in this study with those reported previously at various temperatures and at atmospheric pressure with standard uncertainties: u (T) = ±0.01 K u (ρ) = ±0.1 kg/m³, u (m) = ±0.0004 mol/kg, and u (P) = ±0.002 atm.

Density (ρ0) kg/m^3
Methanol				Acetone
T/K	This work	Lit. value	(Reference)	T/K	This work	Lit. value	(Reference)
293.15	791.6	791.9	(Papanastasiou and Ziogas [12])	293.15	789.9	790.02	(Kinart et al. [13])
		791.65	(Gonfa et al. [14])			790.355	(Janz and Tomkins [15])
298.15	786.9	786.884	(Anwar and Yasmeen [16])	298.15	784.2	784.45	(Kinart et al. [13])
		786.68	(Tu et al. [17])			784.638	(Janz and Tomkins [15])
303.15	782.2	782.158	(Anwar and Yasmeen [16])	303.15	778.5	778.7	(Fan et al. [18])
		781.9	(Tu et al. [19])			778.57	(Enders et al. [20])
308.15	777.2	777.2	(Tu et al. [17])	308.15	773.0	773.0	(Hafez and Hartland [21])
		777.414	(Anwar and Yasmeen [16])			773.065	(Janz and Tomkins [15])
313.15	772.4	772.3	(Tu et al. [19])	313.15	767.3	767.03	(Fan et al. [18])
		772.64	(Anwar and Yasmeen [16])			767.21	(Estrada-Baltazar et al [22])
318.15	767.5	767.6	(Tu et al. [17])	318.15	761.6	761.288	(Janz and Tomkins [15])
		767.844	(Anwar and Yasmeen [16])			761.3	(Hafez and Hartland [21])
323.15	762.7	762.7	(Bhuiyan and Uddin [23])	323.15	755.7	755.14	(Fan et al. [18])
		763.028	(Anwar and Yasmeen [16])			755.31	(Estrada-Baltazar et al [22])
328.15	757.7	759.2	(Cai et al. [24])			755.54	(Wu et al. [25])