IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Calcium chloride and Water

Components:
   (1) Calcium chloride; CaCl2; [10043-52-4]  NIST Chemistry WebBook for detail
   (2) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
   (3) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Eremina, A.O.; Efanov, L.N.; Sorokina, N.A. *Zh. Fiz. Khim. 1989, 63, 2491-94; Russ. J. Phys. Chem. (Engl. Transl.) 1989, 63, 1361-63.

Variables:
   Temperature = 298.15 K and 313.15 K
   Pressure = 0.1 MPa
   Concentration = 10³c₂/mol L^-1 = 0 - 25

Prepared By:
   Yu. P. Yampol'skii

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


T/K	10³ * Concentration C₁ [mol/L]	Concentration Note	10³ * Concentration C₂ [mol/L]	Concentration Note
298.15	33.90	c	0	b
298.15	33.54	c	2.3	b
298.15	33.25	c	5	b
298.15	32.92	c	7.5	b
298.15	32.58	c	10	b
298.15	33.00	c	12.5	b
298.15	32.96	c	13.5	b
298.15	32.75	c	15	b
298.15	32.07	c	16.25	b
298.15	31.37	c	17.5	b
298.15	29.98	c	20	b
298.15	27.16	c	25	b
313.15	22.69	c	0	b
313.15	22.43	c	2.5	b
313.15	22.20	c	5	b
313.15	21.95	c	7.5	b
313.15	21.69	c	10	b
313.15	22.00	c	12.5	b
313.15	22.11	c	15	b
313.15	21.78	c	16.25	b
313.15	21.41	c	17.5	b
313.15	20.68	c	20	b
313.15	19.21	c	25	b

Notes:
   ^a  Data taken from a graph by compiler.
   ^b  S₁ = solubility of CO₂
   ^c  c₁ = solubility of CO₂

Method/Apparatus/Procedure:
   Attainment of the equilibrium was checked by the constancy of CO₂ content in 3-5 subsequent samples of gas after saturation of the solution. The concentration of carbon dioxide was determined by titration. Detailed description of the technique is given in Ref. 1.

Source and Purity of Materials:
   (1) Source not given. Before contacting with water solutions CO₂ was allowed to pass through the vessels with NaHCO₃, glass beads, glass wool, and distilled water.
   (2) Nothing specified.
   (3) Distilled.

Estimated Errors:
   Solubility: δc₁/c₁ = ± 0.06-0.2 %
   Temperature: δT/K = ± 0.05

References:
   1. Burmakina, G.V.; Efanov, L.N.; Shnet, M.A. *Zh. Fiz. Khim. 1982, 56, 1159; Russ. J. Phys. Chem. (Engl. Transl.) 1982, 56, 705.