IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitrogen with Ethyne, Hydrogen, Carbon dioxide and Polystyrene (PS)

Components:
   (1) Polystyrene (PS); ; [9003-53-6]  NIST Chemistry WebBook for detail
   (2) Nitrogen with Ethyne, Hydrogen, Carbon dioxide; N2, C2H2, H2, CO2; [7727-37-9, 74-86-2, 1333-74-0, 124-38-9]  NIST Chemistry WebBook for detail

Original Measurements:
   D.M. Newitt and K.E. Weale, J. Chem. Soc., 1541-1549 (1948).

Variables:
   Temperature = 347 K - 464 K
   Pressure = 8.0-30.0 MPa

Prepared By:
   A.K. Bokarev

Experimental Remarks:

   The data fitted the following Van't Hoff equations:

log(S/cm³(STP)/cm³ atm) = -2.4 + 1900/4.58 (T/K) for H₂;

   log(S/cm³(STP)/cm³ atm) = -2.4 + 1700/4.58 (T/K) for N₂.

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

Table 1. Solubility C/(cm³(STP)/cm³) of gases in PS at 443 K
Chemical Name	Pressure [atm]	Concentration C₁
H2	80	2.89
H2	142	5.35
H2	224.5	8.48
H2	233	9.42
H2	243	9.66
H2	306.5	11.95
CO2	50	3.04
CO2	51	2.82
N2	118	2.95
N2	182	5.02
N2	187	5.57
N2	232	6.15
N2	282.5	7.93
N2	287	7.77
C2H2	49	5.27
C2H2	77.55	8.05
C2H2	92.5	9.75

Table 2. Temperature dependence of solubility coefficient S/(cm³(STP)/cm³ atm)
T/K	Chemical Name	Keunen coefficient, S
347	N2	0.035
409	N2	0.033
422	N2	0.031
443	N2	0.0275
464	N2	0.026
290	H2	0.065
322	H2	0.061
345	H2	0.060
399	H2	0.047
415	H2	0.042
443	H2	0.037
459.5	H2	0.034

Method/Apparatus/Procedure:
Manometric method of measurement of solubility was used.

Source and Purity of Materials:
PS from B.X. Plastics Ltd. was studied. No characteristics of the polymer given.

Estimated Errors: