IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Neon with Argon, Hydrogen, Carbon dioxide and Polyundecaneamide (Nylon 11)

Components:
   (1) Neon with Argon, Hydrogen, Carbon dioxide; Ne, Ar, H2, CO2; [7440-01-9, 7440-37-1, 1333-74-0, 124-38-9]  NIST Chemistry WebBook for detail
   (2) Polyundecaneamide (Nylon 11); ; [25035-04-5]  NIST Chemistry WebBook for detail

Original Measurements:
   R. Ash, R.M. Barrer and D.G. Palmer, Polymer 11, 421-435 (1970).

Variables:
   Temperature = 293.2 K - 333.2 K
   Pressure = 6.65-33.25 kPa

Prepared By:
   Yu. P. Yampol'skii

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

Solubility isotherms obeyed Henry's law; the solubility coefficients S /(cm³/cm³ atm) determined from their slopes are given below, as well as the enthalpies of solution DH /(kcal/mol)
T/K	Chemical Name	10² * Keunen coefficient, S	Enthalpy
293.2	Ne	0.54	1.0
303.2	Ne	0.56	1.0
313.2	Ne	0.62	1.0
323.2	Ne	0.65	1.0
333.2	Ne	0.66	1.0
313.2	Ar	3.91	-0.4
323.2	Ar	3.88	-0.4
333.2	Ar	3.77	-0.4
293.2	H2	1.45	0.5
303.2	H2	1.48	0.5
313.2	H2	1.50	0.5
323.2	H2	1.58	0.5
333.2	H2	1.63	0.5
313.2	CO2	36.8	-3.2
323.2	CO2	31.4	-3.2
333.2	CO2	28.0	-3.2

Method/Apparatus/Procedure:
   After the equilibrium was attained the remaining gas was swept by mercury. The measurement of the pressure of gas desorbed was performed by means of McLeod type gauge. Corrections for loss of gas by desorption during flushing process were introduced.

Source and Purity of Materials:
   Nylon 11 was obtained from Griflex Ltd. Gases (British Oxygen Co) were spectrally pure.

Estimated Errors:
   Solubility: ± 0.02
   Temperature: ± 0.1 K