IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitrogen with Carbon dioxide, n-Butane and Poly(vinyl chloride) (PVC)

Components:
   (1) Nitrogen with Carbon dioxide, n-Butane; N2, CO2, C5H10; [7727-37-9, 124-38-9, 106-97-8]  NIST Chemistry WebBook for detail
   (2) Poly(vinyl chloride) (PVC); ; [9002-86-2]  NIST Chemistry WebBook for detail

Original Measurements:
   A.R. Berens, Polym. Eng. Sci. 20, 95 (1980).

Variables:
   Temperature = 298 K - 303 K
   Pressure = 0-100 kPa

Prepared By:
   Yu. P. Yampol'skii

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

Table 1. Concentration isotherms of CO₂ in emulsion PVC at 298 K (gravimetric data). (The original data were represented graphically)
Pressure [kPa]	Concentration C₁ [(mg₁/g₂)]	Method/Comments
7.57	0.36	Never-heated
13.98	0.67	Never-heated
28.37	1.29	Never-heated
41.41	1.76	Never-heated
55.25	2.22	Never-heated
68.51	2.61	Never-heated
87.78	2.98	Never-heated
94.66	3.30	Never-heated
7.41	0.21	Heat-treated
15.03	0.38	Heat-treated
28.11	0.73	Heat-treated
41.59	1.04	Heat-treated
54.68	1.32	Heat-treated
68.56	1.58	Heat-treated
82.26	1.82	Heat-treated
94.77	2.03	Heat-treated

Table 2. Sorption isotherms of CO₂ in suspension PVC (Digisorb data). (The original data were represented graphically)
T/K	Chemical Name	Pressure [kPa]	Concentration C₁ [(mg₁/g₂)]	Method/Comments
298	CO2	10.79	0.48	Never-heated
298	CO2	15.70	0.69	Never-heated
298	CO2	22.57	0.98	Never-heated
298	CO2	40.64	1.63	Never-heated
298	CO2	49.28	1.91	Never-heated
298	CO2	59.29	2.25	Never-heated
298	CO2	66.76	2.49	Never-heated
298	CO2	73.82	2.82	Never-heated
298	CO2	79.32	2.95	Never-heated
298	CO2	84.24	3.07	Never-heated
298	CO2	88.17	3.16	Never-heated
298	CO2	90.33	3.21	Never-heated
298	CO2	92.88	3.29	Never-heated
298	CO2	95.04	3.35	Never-heated
298	CO2	96.81	3.36	Never-heated
298	CO2	98.39	3.37	Never-heated
298	CO2	100.75	3.38	Never-heated
298	CO2	10.61	0.33	Heat-treated
298	CO2	15.32	0.46	Heat-treated
298	CO2	22.39	0.67	Heat-treated
298	CO2	40.08	1.14	Heat-treated
298	CO2	48.72	1.36	Heat-treated
298	CO2	58.94	1.59	Heat-treated
298	CO2	66.60	1.80	Heat-treated
298	CO2	73.48	1.96	Heat-treated
298	CO2	79.57	2.08	Heat-treated
298	CO2	83.70	2.19	Heat-treated
298	CO2	88.22	2.31	Heat-treated
298	CO2	90.18	2.37	Heat-treated
298	CO2	92.15	2.42	Heat-treated
298	CO2	94.11	2.46	Heat-treated
298	CO2	96.67	5.51	Heat-treated
298	CO2	98.44	2.54	Heat-treated
298	CO2	100.40	2.57	Heat-treated
298	N2	11.32	0.01	Never-heated
298	N2	15.02	0.02	Never-heated
298	N2	22.02	0.02	Never-heated
298	N2	40.14	0.04	Never-heated
298	N2	47.96	0.04	Never-heated
298	N2	58.26	0.05	Never-heated
298	N2	66.08	0.06	Never-heated
298	N2	72.88	0.06	Never-heated
298	N2	78.44	0.06	Never-heated
298	N2	82.76	0.07	Never-heated
298	N2	86.88	0.07	Never-heated
298	N2	89.35	0.07	Never-heated
298	N2	91.63	0.07	Never-heated
298	N2	94.72	0.07	Never-heated
298	N2	96.57	0.07	Never-heated
298	N2	98.84	0.07	Never-heated
298	N2	93.47	0.07	Never-heated
298	N2	97.81	0.07	Never-heated
298	N2	99.66	0.08	Never-heated
298	N2	11.13	0.01	Heat-treated
298	N2	15.04	0.01	Heat-treated
298	N2	21.63	0.01	Heat-treated
298	N2	40.17	0.02	Heat-treated
298	N2	48.00	0.03	Heat-treated
298	N2	58.31	0.03	Heat-treated
298	N2	65.74	0.03	Heat-treated
298	N2	72.95	0.03	Heat-treated
298	N2	78.73	0.03	Heat-treated
298	N2	83.05	0.03	Heat-treated
298	N2	86.97	0.04	Heat-treated
298	N2	88.82	0.04	Heat-treated
298	N2	91.51	0.04	Heat-treated
298	N2	93.77	0.04	Heat-treated
298	N2	96.66	0.04	Heat-treated
298	N2	97.90	0.04	Heat-treated
298	N2	98.72	0.04	Heat-treated
298	N2	99.96	0.04	Heat-treated

Table 3. Concentration isotherms of n-butane in emulsion PVC at 303 K; gravimetric data, sorption times > 18 h (the original data were represented graphically)
T/K	Pressure [Relative Pressure]	Concentration C₁ [(mg₁/g₂)]	Method/Comments
298	0.01	0.91	Never-heated
298	0.02	1.49	Never-heated
298	0.04	2.47	Never-heated
298	0.10	5.96	Never-heated
298	0.01	0.36	Heat-treated
298	0.04	1.08	Heat-treated
298	0.10	2.27	Heat-treated

Method/Apparatus/Procedure:
   Gravimetric sorption experiments were carried out using a Cahn microbalance and, for highly sorbing gases like butane, a vacuum system described in Ref. 1. For nitrogen and partly for carbon dioxide a volumetric gas sorption method was used by means of Digisorb 2500 automatic surface area analyzer (Micrometrics Instruments Corp.)

Source and Purity of Materials:
   Gases: research grade purity.
PVC: obtained by suspension and emulsion techniques (in the form of powder), density 1.404 ± 0.014 g/cm³.
"Never-heated" samples: recovered and dried at temperature not exceeding 273 K.
"Heat-treated" samples: heated 1 h at 373 K.

Estimated Errors:

   Temperature: No information given.

References:
   ¹ A. R. Berens, Angew Makromol. Chem. 47, 97 (1975).