IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Argon with Poly(ethyl methacrylate) (PEMA)

Components:
   (1) Poly(ethyl methacrylate) (PEMA); C3H8; [9003-42-3]  NIST Chemistry WebBook for detail
   (2) Argon; Ar; [7440-37-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Y. Kamiya, K. Mizoguchi, Y. Naito and D. Bourbon, Intern. Congress on Membranes (ICOM-90), Chicago, pp. 1382-1384 (1990).

Variables:
   Temperature = 278.2 K - 358.2 K
   Pressure = 278.2 K - 358.2 K

Prepared By:
   Yu. P. Yampol'skii

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

Table 1. Dual mode sorption parameters for argon in PEMA
T/K	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]
278.4	—	5.23	0.024
283.2	—	4.21	0.023
288.2	—	3.55	0.023
298.2	—	2.75	0.020
308.2	—	2.23	0.019
318.2	—	2.36	0.014
328.2	0.104	3.49	0.006
338.2	0.094	1.40	0.006
343.2	0.091	0.21	0.020
348.2	0.088	—	—
353.2	0.089	—	—

Table 2. Sorption isotherms of argon in PEMA (The original data were represented graphically)
Pressure [MPa]	Sorption [(V₁(STP)/V₂)]
0.51	1.01
0.54	0.99
0.56	1.05
0.99	1.86
1.02	1.81
1.04	1.85
1.51	2.61
2.01	3.47
2.01	3.39
2.01	3.37
2.51	4.16
3.01	4.78
3.02	4.70
3.98	6.01
3.98	5.94
3.98	5.89
4.90	7.13
4.90	7.10
0.34	0.28
0.39	0.33
0.85	0.76
1.10	0.92
1.10	0.99
2.08	1.81
2.08	1.85
3.07	2.67
3.07	2.71
3.32	2.91
4.05	3.49
4.11	3.56
5.04	4.33
5.03	4.39
0.51	0.54
0.52	0.49
0.10	1.07
1.01	1.05
1.50	1.58
1.49	1.54
1.99	2.10
2.00	2.06
2.96	3.12
2.96	3.05
3.95	4.06
3.97	4.02
4.95	5.07
4.95	5.02
0.51	0.74
052	0.67
1.00	1.43
1.01	1.35
0.99	1.29
1.50	2.08
1.50	1.92
1.99	2.75
2.00	2.69
1.98	2.60
1.99	2.52
2.48	3.23
2.48	3.08
2.99	3.85
3.02	3.85
2.98	3.74
2.99	3.67
2.97	3.61
3.47	4.33
3.49	4.17
3.95	4.90
3.96	4.81
3.97	4.69
4.37	5.28
4.49	5.22
4.90	5.84
4.96	5.87
4.95	5.72

Method/Apparatus/Procedure:
   Sorption isotherms were determined gravimetrically with an electronic microbalance Cahn 2000.

Source and Purity of Materials:
   Ar: purity 99.999 %.
PEMA: glass transition temperature 334 K.

Estimated Errors:

   Temperature: No Information given.