IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Methane with Polystyrene (PS)

Components:
   (1) Polystyrene (PS); ; [9003-53-6]  NIST Chemistry WebBook for detail
   (2) Methane; CH4; [74-28-8]  NIST Chemistry WebBook for detail

Original Measurements:
   J.L. Lundberg, B.M. Wilk and M.J. Huyett, Ind. Eng. Chem., Fundam. 2, 37-43 (1963). J.L. Lundberg, E.J. Mooney and C.E. Rogers, J. Polym. Sci. Part A. 7, 947-962 (1969).

Variables:
   Temperature = 373 K - 461 K
   Pressure = 4.9-67 MPa

Prepared By:
   Yu. P. Yampol'skii

Experimental Remarks:

   Digitized by the compiler from the original figure.

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

Solubility of methane in PS
T/K	Pressure [atm]	Concentration C₁ [cm³(STP)/cm³]
373.35	320	22.5
398.55	50	24
398.55	217	16.5
398.55	300	22
398.55	333	21
398.55	347	24
398.55	433	25
398.55	467	27
398.55	537	4.5
398.55	590	28
398.55	667	29
428.57	50	5
428.57	163	14
428.57	243	23
461.55	67	8
461.55	120	14
461.55	200	21
461.55	250	25
461.55	313	30

Method/Apparatus/Procedure:
   The method of "interval" sorption was used. Pressure decrease due to sorption in a closed system of known volume was measured with a pressure transducer. Polymer samples were put between two discs of sintered glass. No correction for the swelling of the sample was introduced.

Source and Purity of Materials:
   PS had M_w = 500 000.
Purity of methane was >99.0 %.

Estimated Errors:
   Solubility: < 5%.
   Temperature: ± 0.02 K.
   Pressure: ± 0.5 atm.