IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Water

Components:
   (1) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Li, Y.-H.; Tsui, T.-F., J. Geophys. Res. 1971, 76, 4203-7.

Variables:
   Temperature = 273.85 K to 303.15 K
   Pressure = 101.325 kPa

Prepared By:
   Rosa Crovetto

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


t/°C	T/K	Temp Note	Pressure [atm]	Pressure (compiler) [bar]	Mole Fraction (x₁)	x₁ Note	10² * Solubility	Solubility Note
0.7	273.85	a	1.00	1.020	1.350	a	7.501	b
4.0	277.15	a	1.00	1.021	1.188	a	6.603	b
10.2	283.35	a	1.00	1.026	0.9545	a	5.302	b
20.0	293.15	a	1.00	1.037	0.7053	a	3.911	b
30.0	303.15	a	1.00	1.056	0.5420	a	2.997	b

Notes:
   ^a  Calculated by the compiler.
   ^b  S₁ = solubility of CO₂; S° = 1 mol L^-1 atm^-1.

Method/Apparatus/Procedure:
   Equilibration was achieved by bubbling gas through thermostatted water overnight.
A liquid sample was analyzed for CO₂ using an IR technique.

Source and Purity of Materials:
   (1) Pure, (99.99 ± 0.01) %.
   (2) Distilled.

Estimated Errors:

   Temperature: Temperature controlled to ± 0.02 K.
   Pressure: δP/mmHg = ± 0.005 (by authors).