IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitrogen with Carbon dioxide, Methane and Polyarylate Ardel (PA)

Components:
   (1) Nitrogen with Carbon dioxide, Methane; N2, CO2, CH4; [7727-37-9, 124-38-9, 74-82-8]  NIST Chemistry WebBook for detail
   (2) Polyarylate Ardel (PA); ; [25639-68-3]  NIST Chemistry WebBook for detail

Original Measurements:
   T.A. Barbari, W.J. Koros and D.R. Paul, J. Polym. Sci., Part B: Polym. Phys. 26, 729-744 (1988).

Variables:
   Temperature = 308 K
   Pressure = 0-2.33 MPa

Prepared By:
   A.K. Bokarev

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)

Table 1. Dual mode sorption parameters for gases in polyarylate at 308 K
Chemical Name	Henry's law constant, K [cm3(STP) cm-3 atm -1]	Langmuir's parameter, C_H [cm³(STP) cm^-3]	Affinity Coefficient b [atm^-1]
CO2	0.631	22.69	0.215
CH4	0.181	6.45	0.100
N2	0.081	1.32	0.074

Table 2. Sorption isotherms of various gases in polyarylate at 308 K (The original data were represented graphically)
Chemical Name	Pressure [MPa]	Sorption [(V₁(STP)/V₂)]
CO2	0.21	7.30
CO2	0.27	9.17
CO2	0.31	10.11
CO2	0.35	11.14
CO2	0.60	15.81
CO2	0.65	16.74
CO2	0.73	18.33
CO2	0.97	21.03
CO2	1.04	21.96
CO2	1.13	23.27
CO2	1.38	25.49
CO2	1.46	26.52
CO2	1.58	27.72
CO2	1.84	29.38
CO2	1.91	29.94
CO2	2.30	33.08
CO2	2.33	33.36
CH4	0.26	1.65
CH4	0.32	1.98
CH4	0.36	2.22
CH4	0.42	2.53
CH4	0.62	3.39
CH4	0.70	3.82
CH4	0.78	4.09
CH4	0.85	4.44
CH4	1.04	4.97
CH4	1.13	5.40
CH4	1.21	5.66
CH4	1.29	5.95
CH4	1.48	6.38
CH4	1.56	6.71
CH4	1.65	6.97
CH4	1.74	7.23
CH4	1.92	7.66
CH4	2.02	7.92
CH4	2.12	8.16
CH4	2.18	8.31
N2	0.19	0.30
N2	0.23	0.37
N2	0.30	0.44
N2	0.33	0.54
N2	0.40	0.54
N2	0.44	0.63
N2	0.59	0.78
N2	0.68	0.89
N2	0.70	0.98
N2	0.85	1.13
N2	0.92	1.20
N2	1.03	1.30
N2	1.11	1.39
N2	1.19	1.52
N2	1.29	1.61
N2	1.40	1.70
N2	1.49	1.74
N2	1.57	1.87
N2	1.64	1.98
N2	2.04	2.26
N2	2.22	2.46
N2	1.75	2.04
N2	1.82	2.15
N2	1.94	2.19

Method/Apparatus/Procedure:
   The sorption apparatus and procedures used in the present sorption experiments are the same as described earlier.¹

Source and Purity of Materials:
   CO₂,CH₄,N₂:purity > 99.99 %. PA (Ardel D-100): Union Carbide Co., density 1.21 g/cm3, glass transition temperature 457 K.

Estimated Errors:

   Temperature: No information given.

References:
   ¹W. J. Koros, D. R. Paul, and A, A. Rocha, J. Polym. Sci,, Polym. Phys; Ed. 14, 687 (1976).