IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Various hydrocarbons with Poly(vinyltrimethyl silane) (PVTMS)

Components:
   (1) Poly(vinyltrimethyl silane) (PVTMS); ; [25036-32-2]  NIST Chemistry WebBook for detail
   (2) Various hydrocarbons C2-C4; ; []  NIST Chemistry WebBook for detail

Original Measurements:
   N.E. Kaliuzhnyi, Yu.P Yampol'skii, S.G. Durgaryan and N.S. Nametkin, Dokl. Akad. Nauk SSSR 265, 1170-1173 (1982).

Variables:
   Temperature = 298 K - 383 K

Prepared By:
   Yu. P. Yampol'skii

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

Solubility coefficients S/(cm³(STP)/cm³ atm) of hydrocarbons
T/K	Chemical Name	Keunen coefficient, S
298	Ethylene C2H4 [74-85-1]	3.6
298	Ethane C2H6 [74-84-0]	7.2
298	Propene C3H6 [115-07-1]	23
298	Propane C3H8 [74-98-6]	27
298	n-Butane C4H10 [106-97-8]	90
333	Propane C3H8 [74-98-6]	8.05
333	n-Butane C4H10 [106-97-8]	22.2
373	Propane C3H8 [74-98-6]	—
373	n-Butane C4H10 [106-97-8]	5.62

Enthalpies of sorption Δ_{H kcal/mol}
Chemical Name	Enthalpy
C2H6	5.4
C3H8	8.02 ± 0.06
C4H10	6.42 ± 0.15

Method/Apparatus/Procedure:
Inverse gas chromatography was used for the determination of solubility coefficients. By the measurements correction for the pressure drop in a column was introduced.

Source and Purity of Materials:
PVTMS was prepared by anionic polymerization (sec.BuLi as a catalyst) and had molecular mass about 500,000 and a density 0.898 g/cc.

Estimated Errors: