Table 4.

The apparent molar isobaric expansions ($E_{p,\phi }^0$) and Hepler’s constants ${\left(\raisebox{1ex}{${\partial }^2{V}_{\phi }^0$}\!\left/ \!\raisebox{-1ex}{$\partial T^2$}\right.\right)}_p$ for binary PTH/ethanol and ternary PTH/ethanol/DESs solutions at T = (288.15 to 318.15) K and at ambient pressure (P = 871 hPa).

Systems	106$E_{p,\phi }^0$ (m3.mol-1.K-1)				102${\left(\raisebox{1ex}{${\partial }^2{V}_{\phi }^0$}\!\left/ \!\raisebox{-1ex}{$\partial T^2$}\right.\right)}_p$
	288.15 K	298.15 K	308.15 K	318.15 K	(m6.mol-2.K-2)
PTH in ethanol	− 0.128	− 0.120	− 0.112	− 0.104	0.08
PTH in ternary ethanol solution of ChCl:Gly (0.5 mol kg-1)	− 0.2006	− 0.1771	− 0.1536	− 0.1301	0.24
PTH in ternary ethanol solution of ChCl:Gly (1 mol kg-1)	− 0.2155	− 0.1885	− 0.1615	− 0.1345	0.27
PTH in ternary ethanol solution of ChCl:Gly (1.5 mol kg-1)	− 0.2364	− 0.2059	− 0.1755	− 0.1450	0.30
PTH in ternary ethanol solution of ChCl:EG (0.5 mol kg-1)	− 0.2206	− 0.1951	− 0.1695	− 0.1440	0.26
PTH in ternary ethanol solution of ChCl:EG (1 mol kg-1)	− 0.2378	− 0.2078	− 0.1778	− 0.1478	0.30
PTH in ternary ethanol solution of ChCl:EG (1.5 mol kg-1)	− 0.2553	− 0.2208	− 0.1862	− 0.1517	0.35

Standard uncertainty (u) for DESs composition was estimated to be less than 5·10^–2 mol ratio.