IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Magnesium sulfate and Water

Components:
   (1) Magnesium sulfate; MgSO4; [7487-88-9]  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:
   Gerecke, J., Diss. Dr. rer. Nat. 1969, Hochsch. "Carl Schorlemmer", Leuna-Merseburg, DDR.

Variables:
   Temperature = 288.15 K to 333.15 K
   Pressure = 101.325 kPa
   Concentration = c₂/mol dm^-3 = 0 - 2

Prepared By:
   D.M. Mason

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


t/°C	T/K	Concentration C₂ [mol/dm³]	Keunen coefficient, S	S Note	α	α Note
15	288.15	0	-	b	0.990	a
15	288.15	0.25	0.850	b	0.845	a
15	288.15	0.5	0.722	b	0.717	a
15	288.15	1	0.569	b	0.565	a
15	288.15	2	0.266	b	0.260	a
20	293.15	0	-	b	0.860	a
20	293.15	0.25	0.7575	b	0.752	a
20	293.15	0.5	0.621	b	0.617	a
20	293.15	1	0.4863	b	0.481	a
20	293.15	2	0.261	b	0.255	a
25	298.15	0	-	b	0.758	a
25	298.15	0.25	0.667	b	0.661	a
25	298.15	0.5	0.557	b	0.552	a
25	298.15	1	0.421	b	0.416	a
25	298.15	2	0.2083	b	0.203	a
30	303.15	0	-	b	0.671	a
30	303.15	0.25	0.602	b	0.597	a
30	303.15	0.5	0.493	b	0.488	a
30	303.15	1	0.378	b	0.373	a
30	303.15	2	0.180	b	0.175	a
35	308.15	0	-	b	0.605	a
35	308.15	0.25	0.5275	b	0.522	a
35	308.15	0.5	0.437	b	0.432	a
35	308.15	1	0.342	b	0.377	a
35	308.15	2	0.1646	b	0.160	a
40	313.15	0	-	b	0.546	a
40	313.15	0.25	0.467	b	0.461	a
40	313.15	0.5	0.384	b	0.379	a
40	313.15	1	0.302	b	0.297	a
40	313.15	2	0.1444	b	0.140	a
45	318.15	0	-	b	0.482	a
45	318.15	0.25	0.420	b	0.414	a
45	318.15	0.5	0.344	b	0.339	a
45	318.15	1	0.275	b	0.270	a
45	318.15	2	0.1302	b	0.126	a
50	323.15	0	-	b	0.436	a
50	323.15	0.25	0.379	b	0.374	a
50	323.15	0.5	0.310	b	0.305	a
50	323.15	1	0.2475	b	0.243	a
50	323.15	2	0.117	b	0.113	a
55	328.15	0	-	b	0.392	a
55	328.15	0.25	0.339	b	0.334	a
55	328.15	0.5	0.2775	b	0.273	a
55	328.15	1	0.2275	b	0.223	a
55	328.15	2	0.1048	b	0.101	a
60	333.15	0	-	b	0.372	a
60	333.15	0.25	0.2073	b	0.203	a
60	333.15	0.5	0.096	b	0.093	a

Notes:
   ^a  α = Bunsen coefficient [cm³ (STP) cm^-3 atm^-1].
   ^b  S₁ = Kuenen coefficient [cm³ (STP) g^-1(H₂O) atm^-1].

Method/Apparatus/Procedure:
   The principle of the Ostwald method was used in which a measured volume of gas-free liquid is stirred in the presence of the gas, and its decrease in volume is measured in a burette over mercury. The volume of liquid was measured at the experimental temperature. For calculation of the Kuenen coefficient, the density of the solution was obtained from Landolt-Börnstein extant 1969. The molar concentration of salt in the liquid was standardized at 20°C. These data are analyzed and discussed further in Ref. 1.

Source and Purity of Materials:
   (1)VEB Leuna Works; 99.8 vol %; the impurity was mostly water (author).
   (2) DDR pro analysis grade by DDR Standard TGL 5021.
   (3) Double distilled.

Estimated Errors:

   Temperature: Not given.

References:
   1. Gerecke, J.; Bittrich, H.J., Wiss. Z. Tech. Hochsch. Chem. "Carl Schorlemmer" Leuna-Merseburg 1971, 13(2), 115-22.