IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Sulfur dioxide with Polyimide Kapton H

Components:
   (1) Polyimide Kapton H; ; [25036-53-7]  NIST Chemistry WebBook for detail
   (2) Sulfur dioxide; SO2; [25036-53-7]  NIST Chemistry WebBook for detail

Original Measurements:
   R.M. Felder, C.J. Patton and W.J. Koros, J. Polym. Sci., Polym. Phys. Ed. 19, 1895 (1981).

Variables:
   Temperature = 298 K - 308 K
   Pressure = 0-80 kPa

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 sulfur dioxide in polymide Kapton H
T/K	Henry's law constant, K [cm³(STP)/cm³ atm]	Langmuir's parameter, C_H [cm³(STP) cm^-3]	Affinity Coefficient b [atm^-1]
298	32.51	21.29	20.40
308	28.48	16.78	18.06
318	21.94	14.22	16.31
328	18.71	11.11	16.02

View Figure 1 for this Evaluation

Method/Apparatus/Procedure:
   A quartz spring balance was used to measure the sorption.

Source and Purity of Materials:
   Kapton H: DuPont Co. density 1.42 g/cm³.

Estimated Errors:

   Temperature: No information given.