IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Sulfur dioxide with Polycarbonate (PC)
Components:
   (1) Polycarbonate (PC); ; [24936-68-3]  NIST Chemistry WebBook for detail
   (2) Sulfur dioxide; SO2; [25036-53-7]  NIST Chemistry WebBook for detail
Original Measurements:
   S. Frimpong, C.A. Plank and W.L.S. Laukhauf, Chem. Eng. J. 42, 25 (1989).

 Variables:
   Temperature = 283.2 K - 343.2
   Pressure = 0-100 kPa

 Prepared By:
   Yu. P. Yampol'skii

 Experimental Remarks:
   The experiment data for 298.2 and 313.2 K were correlated by the equation:
C=123.212 exp(1.0772 x 10-3(RT/cal mol-1)(ln(p/atm)) + (2355/((T/K)-33))-10.24)]
based on adsorption potential theory in Ref. 1.

 Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
   
Dual mode sorption parameters for sulfur dioxide in polycarbonate
T/KHenry's law constant, K [cm3(STP)/cm3 atm]Langmuir's parameter, CH [cm3(STP) cm-3]Affinity Coefficient b [atm-1]
283.261.6622.4519.39
298.240.2613.9316.33
313.226.279.5215.57
343.211.724.0812.13
 View Figure 1 for this Evaluation

Method/Apparatus/Procedure:
   A McBain quartz spring balance was employed for sorption measurement. The apparatus is described in Ref. 2.

 Source and Purity of Materials:
   PC (Lexan 101): General Electric Co., glass transition temperature 421 K (DSC), melting point 496.8 K.

 Estimated Errors:

   Temperature: Relative precision in T: ±0.1 K.

 References:
   1C A. Plank, W. L. S. Laukauf, and G. R. Ranade, J. Appl. Polym. Sci. 30, 2695 (1985).
   2G. R. Ranade, V. M. Nadgir, C. A. Plank, and W. L. S. Laukauf, J. Appl. Polym. Sci. 28, 201 (1983).