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:
   Prutton, C.F.; Savage, R.L., J. Am. Chem. Soc. 1945, 67, 1550-4.

Variables:
   Temperature = 348.65 K to 394.15 K
   Pressure = 348.65 K to 394.15 K
   Concentration = 10²w₂ = 10.1 - 30.2

Prepared By:
   D.M. Mason

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


t/°C	T/K	Pressure [atm]	Mass Fraction (w₂)	w2 Note	Mole Fraction (x₁)	x₁ Note
75.5	348.65	16	10.1	a	2.6	b
75.5	348.65	16	10.1	a	2.7	b
75.5	348.65	62	10.1	a	8.1	b
75.5	348.65	63	10.1	a	8.3	b
75.5	348.65	162	10.1	a	13.3	b
75.5	348.65	163	10.1	a	13.3	b
75.5	348.65	310	10.1	a	15.4	b
75.5	348.65	328	10.1	a	15.8	b
75.5	348.65	426	10.1	a	17.0	b
75.5	348.65	446	10.1	a	16.8	b
75.5	348.65	585	10.1	a	18.4	b
75.5	348.65	620	10.1	a	19.2	b
76	349.15	22	20.2	a	2.2	b
76	349.15	23	20.2	a	2.2	b
76	349.15	73	20.2	a	5.8	b
76	349.15	73	20.2	a	6.0	b
76	349.15	165	20.2	a	8.8	b
76	349.15	166	20.2	a	8.6	b
76	349.15	282	20.2	a	9.7	b
76	349.15	290	20.2	a	9.8	b
76	349.15	454	20.2	a	10.7	b
76	349.15	460	20.2	a	10.8	b
76	349.15	572	20.2	a	11.7	b
76	349.15	600	20.2	a	11.8	b
76	349.15	15	30.2	a	0.9	b
76	349.15	73	30.2	a	3.6	b
76	349.15	74	30.2	a	3.7	b
76	349.15	161	30.2	a	5.2	b
76	349.15	163	30.2	a	5.1	b
76	349.15	314	30.2	a	6.0	b
76	349.15	319	30.2	a	6.1	b
76	349.15	431	30.2	a	6.7	b
76	349.15	455	30.2	a	6.6	b
76	349.15	525	30.2	a	7.0	b
76	349.15	554	30.2	a	7.0	b
76	349.15	625	30.2	a	6.9	b
101	374.15	57	0	a	10.8	b
101	374.15	107	0	a	15.0	b
101	374.15	109	0	a	15.3	b
101	374.15	210	0	a	20.5	b
101	374.15	212	0	a	20.7	b
101	374.15	283	0	a	22.5	b
101	374.15	290	0	a	22.1	b
101	374.15	320	0	a	23.3	b
101	374.15	325	0	a	23.1	b
101	374.15	443	0	a	25.3	b
101	374.15	452	0	a	25.1	b
101	374.15	518	0	a	26.6	b
101	374.15	558	0	a	27.8	b
101	374.15	615	0	a	28.2	b
101	374.15	17	10.1	a	2.1	b
101	374.15	17	10.1	a	2.2	b
101	374.15	56	10.1	a	8.1	b
101	374.15	120	10.1	a	11.2	b
101	374.15	120	10.1	a	11.3	b
101	374.15	213	10.1	a	13.5	b
101	374.15	213	10.1	a	14.0	b
101	374.15	286	10.1	a	14.7	b
101	374.15	286	10.1	a	15.2	b
101	374.15	347	10.1	a	16.2	b
101	374.15	352	10.1	a	15.9	b
101	374.15	380	10.1	a	16.5	b
101	374.15	394	10.1	a	16.8	b
101	374.15	500	10.1	a	17.4	b
101	374.15	575	10.1	a	18.5	b
101	374.15	618	10.1	a	18.6	b
101	374.15	23	20.2	a	1.7	b
101	374.15	23	20.2	a	1.8	b
101	374.15	88	20.2	a	5.9	b
101	374.15	91	20.2	a	5.8	b
101	374.15	142	20.2	a	7.4	b
101	374.15	142	20.2	a	7.4	b
101	374.15	169	20.2	a	8.4	b
101	374.15	170	20.2	a	8.3	b
101	374.15	290	20.2	a	9.7	b
101	374.15	292	20.2	a	9.9	b
101	374.15	566	20.2	a	11.6	b
101	374.15	574	20.2	a	11.8	b
101	374.15	648	20.2	a	12.3	b
101	374.15	74	30.2	a	3.1	b
101	374.15	76	30.2	a	3.3	b
101	374.15	151	30.2	a	4.7	b
101	374.15	154	30.2	a	4.9	b
101	374.15	234	30.2	a	5.4	b
101	374.15	238	30.2	a	5.2	b
101	374.15	261	30.2	a	5.8	b
101	374.15	388	30.2	a	6.4	b
101	374.15	389	30.2	a	6.4	b
101	374.15	402	30.2	a	6.3	b
101	374.15	525	30.2	a	7.0	b
101	374.15	630	30.2	a	7.1	b
120	393.15	23	0.0	a	3.8	b
120	393.15	23	0.0	a	4.0	b
120	393.15	68	0.0	a	10.0	b
120	393.15	69	0.0	a	10.5	b
120	393.15	186	0.0	a	19.3	b
120	393.15	187	0.0	a	20.0	b
120	393.15	353	0.0	a	24.8	b
120	393.15	360	0.0	a	25.0	b
120	393.15	562	0.0	a	28.8	b
120	393.15	570	0.0	a	29.0	b
120	393.15	646	0.0	a	29.9	b
120	393.15	694	0.0	a	30.0	b
121	394.15	21	10.1	a	2.7	b
121	394.15	21	10.1	a	2.7	b
121	394.15	76	10.1	a	6.1	b
121	394.15	77	10.1	a	6.9	b
121	394.15	149	10.1	a	11.3	b
121	394.15	153	10.1	a	11.1	b
121	394.15	297	10.1	a	14.8	b
121	394.15	300	10.1	a	14.8	b
121	394.15	437	10.1	a	16.8	b
121	394.15	460	10.1	a	16.7	b
121	394.15	585	10.1	a	18.4	b
121	394.15	621	10.1	a	18.1	b
121	394.15	703	10.1	a	19.3	b
121	394.15	25	20.2	a	1.7	b
121	394.15	25	20.2	a	1.9	b
121	394.15	63	20.2	a	3.9	b
121	394.15	63	20.2	a	3.9	b
121	394.15	150	20.2	a	7.3	b
121	394.15	150	20.2	a	7.3	b
121	394.15	280	20.2	a	9.4	b
121	394.15	282	20.2	a	9.4	b
121	394.15	464	20.2	a	11.0	b
121	394.15	491	20.2	a	11.0	b
121	394.15	506	20.2	a	11.3	b
121	394.15	602	20.2	a	11.7	b
121	394.15	636	20.2	a	11.5	b
121	394.15	659	20.2	a	11.5	b
121	394.15	83	30.2	a	3.1	b
121	394.15	85	30.2	a	3.1	b
121	394.15	148	30.2	a	4.5	b
121	394.15	150	30.2	a	4.5	b
121	394.15	296	30.2	a	5.8	b
121	394.15	302	30.2	a	5.8	b
121	394.15	450	30.2	a	6.3	b
121	394.15	468	30.2	a	6.1	b
121	394.15	494	30.2	a	6.5	b
121	394.15	510	30.2	a	6.9	b
121	394.15	665	30.2	a	7.4	b
120	393.15	28	10.1 (c)	a	3.0	b
120	393.15	28	10.1 (c)	a	3.0	b
120	393.15	73	10.1 (c)	a	7.1	b
120	393.15	74	10.1 (c)	a	8.2	b
120	393.15	155	10.1 (c)	a	11.6	b
120	393.15	156	10.1 (c)	a	12.4	b
120	393.15	309	10.1 (c)	a	15.3	b
120	393.15	318	10.1 (c)	a	15.9	b
120	393.15	480	10.1 (c)	a	17.9	b
120	393.15	492	10.1 (c)	a	18.4	b
120	393.15	643	10.1 (c)	a	19.5	b
120	393.15	655	10.1 (c)	a	19.8	b
120	393.15	830	10.1 (c)	a	22.0	b
120	393.15	874	10.1 (c)	a	21.2	b

Notes:
   ^a  w₂ = mass fraction of CaCl₂
   ^b  Based on moles of H₂O, CaCl₂ and CO₂
   ^c  Solid CaCO₃ was also present during this set of measurements.

Method/Apparatus/Procedure:
   Salt solution and gas were charged to a 300-ml copper-lined vessel supported in a heater, and were equilibrated by rocking. Temperature was measured by a copper constant thermocouple placed in a well in the vessel; pressure was measured by a Crosby deadweight balance. Samples were withdrawn from the bottom of the vessel into a glass trap; the gas evolved from the sample was measured in a water-jacketed buret over mercury at atmospheric pressure, and the solution residue was weighed. Correction was made for the volume of gas still dissolved in the solution. The total volume was reduced to STP and the number of moles was obtained from the molar volume of carbon dioxide, taken as 22,264 cm³. Measurements on a charge of solution were made first at the maximum pressure, after which the pressure was reduced by venting gas. Equilibration and sampling was repeated for measurements at lower pressures.

Source and Purity of Materials:
   (1) Ohio Chemical Co., medicinal.
   (2) Baker, cp.
   (3) No details.

Estimated Errors:
   Solubility: δx₁/x₁ (mean) = < ± 0.03 (authors)
   Temperature: δT/K = ± 1 (authors)
   Pressure: ΔP/P = ± 0.0025 or ΔP/Mpa < 0.007, whichever is larger (authors).