IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: 2-Methylpropane with Polystyrene (PS)

Components:
   (1) Polystyrene (PS); ; [9003-53-6]  NIST Chemistry WebBook for detail
   (2) 2-Methylpropane; C4H10; [75-28-5]  NIST Chemistry WebBook for detail

Evaluator:
   Yu. P. Yampol-skii, A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, April, 1994

Critical Evaluation:

        Three experimental sutdies^1-3 are available for the solubility of 2-methylpropane in PS. The results have been obtained by means of inverse gas chromatography.
     Solubility coefficients S/(cm³(STP) g^-1 atm^-1) from these papers are compared below.

It is evident that there is a reasonable agreement between the data at higher temperatures, but at the lower temperature the discrepancy becomes significant. Further research is desirable to resolve this system.

Experimental Data: (Notes on the Nomenclature)

Solubility coefficients S/(cm³(STP) g^-1 atm^-1) from these papers are compared below:
T/K	Keunen coefficient, S	Reference
423	1.20	1
423	0.77	2,3
448	0.86	1
448	0.66	2,3
473	0.65	1
473	0.58	2,3
498	0.52	1
498	0.50	2,3

References: (Click a link to see its experimental data associated with the reference)

   1  L.I. Stiel and D.F. Harnish, AI.Ch.E. Journal 22, 117-122 (1976).
   2  M. Ohzono, Y. Iwai and Y. Arai, Kagaku Kogaku Ronbunshu 10, 536 (1984).
   3  Y. Iwai, M. Ohzono and Y. Arai, Chem. Eng. Commun. 34, 225 (1985).