Semi-Empirical Models and Cubic Equations of State for Correlation of Solids Solubility in scCO2: From Simple to Complex Substances

Table 2: Pure component thermophysical properties of the four target solid solutes.

Thermophysical Properties	Acrylamide (C₃H₅NO)	Bixin (C₂₅H₃₀O₄)	β-carotene (C₄₀H₅₆)	C-tetramethylcalix[⁴]Resorcinarene (C32H32O8)
Molar mass g/mol	71.08	394.0	536.9	544.59
p_c/bar	57.3	9.64	5.48	0.701
T_c/K	776	907.77	1041.9	1158.4
V^S/cm³×mol-1	63.35^a	383.7	536.5^b	448.86
∆H_fus/J×mol-1	15330^a	31540	56000^a	48388^d
T_m/K	357.65^a	471.15^c	456^a	605.65^d
P_s^subl/MPa at T=308.2 K	1.896E-6	-	-	-
P_s^subl/MPa at T=313.2 K	3.291E-6	3.89E-14	3.37E-14	2.21E-16
P_s^subl/MPa at T=323.2 K	9.423E-6	5.43E-13	2.52E-13	1.14E-15
P_s^subl/MPa at T=333.2 K	-	8.03E-12	5.16E-12	4.3E-15

^aThermophysical Properties of Fluid System, National Institute of Standards and Technology, Available online: http://webbook .nist.gov/chemistry/name-ser.html(accessed in November 2008)

^bReid, R.C., Prausnitz, J.M., Sherwood, T.K., The Properties of Gases and Liquids, 3^rd ed., McGraw Hill, New York , 1986

^cChemSpider, Available online: http://www.chemspider.com/Default.aspx

^dMeasured experimentally [¹⁹].