IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Ammonium chloride and Water

Components:
   (1) Ammonium chloride; NH4Cl; [12125-02-9]  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:
   Burmakina, G.V.; Efanov, L.N.; Shnet, M.A., *Zh. Fiz. Khim. 1982, 56, 1159-61; Russ. J. Phys. Chem. (Engl. Transl.) 1982, 56, 705-7.

Variables:
   Temperature = 298.15 K
   Pressure = 0.1 MPa
   Concentration = 10³c₂/mol L^-1 = 0 - 1000

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	33.85	c	1	b
298.15	33.70	c	2	b
298.15	33.50	c	5	b
298.15	33.00	c	10	b
298.15	32.50	c	25	b
298.15	32.00	c	50	b
298.15	31.00	c	100	b
298.15	30.20	c	250	b
298.15	29.15	c	500	b
298.15	28.15	c	1000	b

Notes:
   ^a  Data taken from a graph by compiler.
   ^b  c₂ = concentration of NH₄Cl
   ^c  c₁ = concentration 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.

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