IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Argon with Nitrogen, Carbon dioxide, Methane and Poly(vinyl chloride) (PVC)

Components:
   (1) Argon with Nitrogen, Carbon dioxide, Methane; Ar, N2, CO2, CH4; [7440-37-1, 7727-37-9, 124-38-9, 74-82-8]  NIST Chemistry WebBook for detail
   (2) Poly(vinyl chloride) (PVC); ; [9002-86-2]  NIST Chemistry WebBook for detail

Original Measurements:
   M.J. El-Hibri and D.R. Paul, J. Appl. Polym. Sci. 31, 2533 (1986).

Variables:
   Temperature = 308 K
   Pressure = 308 K

Prepared By:
   Yu. P. Yampol'skii

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

Dual mode sorption parameters for various gases in PVC at 308 K
T/K	Chemical Name	Henry's law constant, K [cm³(STP) cm^-3 cm Hg^-1]	Langmuir's parameter, C_H [cm³(STP) cm^-3]	Affinity Coefficient b [atm^-1]
308	Ar	0.0377	1.1320	0.0410
308	N2	0.0169	0.4505	0.0448
308	Co2	0.5870	8.9390	0.2094
308	CO2*	0.6340	4.8500	0.3610
308	CO2**	0.5800	5.1600	0.2430
308	CH4	0.0513	2.3050	0.0622

View Figure 1 for this Evaluation

Notes:
   ^*  No drawing, annealing at 358 K.
   ^**  Stretching to draw ratio 3 at 358 K.

Method/Apparatus/Procedure:
   The sorption measurement was carried out using the pressure decay method, Ref. 1.

Source and Purity of Materials:
   CH₄: purity 99 %.
Other gases: purity 99.7 %.
PVC: B.F. Goodrich Co. (CS 5760); density 1.389 g/cm³, glass transition temperature 344 K. It contained 2 % of tin stabilizer.

Estimated Errors:

   Temperature: No information given.

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