IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Sodium sulfate, Ammonium nitrate and Water

Components:
   (1) Sodium sulfate; Na2SO4; [7757-82-6]  NIST Chemistry WebBook for detail
   (2) Ammonium nitrate; NH4NO3; [6484-52-2]  NIST Chemistry WebBook for detail
   (3) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
   (4) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Onda, K.; Sada, E; Kobayashi, T.; Kito, S.; Ito, K., J. Chem. Eng. Jpn 1970, 3, 137-42.

Variables:
   Temperature = 298.15 K
   Pressure = 101.325 kPa
   Concentration = c₂/mol L^-1 = 0 - 0.445
c₃/mol L^-1 = 0 - 1.334

Prepared By:
   C.L. Young

Experimental Remarks:

    P = 1 atm= 1.01325 x 10⁵ Pa

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


T/K	Concentration C₂ [mol/L]	Concentration Note	Concentration C₃ [mol/L]	Concentration Note	α	α Note	Ionic Strength [mol/L]	Ionic Note
298.15	0	a	0	a	0.7595	b	0	b
298.15	0.077	a	0.231	a	0.7109	b	0.487	b
298.15	0.087	a	0.260	a	0.7051	b	0.548	b
298.15	0.147	a	0.441	a	0.6724	b	0.931	b
298.15	0.234	a	0.702	a	0.6248	b	1.481	b
298.15	0.341	a	1.024	a	0.5797	b	2.160	b
298.15	0.445	a	1.334	a	0.5259	b	2.814	b

Notes:
   ^a  Calculated from ionic strength and statement that ratio of ionic strength of sodium sulfate to total ionic strength equals 0.5259:1.
   ^b  Quoted in original paper.
I = ionic strength; α = Bunsen coefficient [cm³ (STP) cm^-3 atm^-1].

Method/Apparatus/Procedure:
   Concentrated solution prepared by weighing, less concentrated solutions prepared by dilution. Equilibrium established between a measure volume of gas and a measured amount of gas-free liquid in a cell fitted with a magnetic stirrer. Amount of gas absorbed estimated from change in volume of gas. Details in source and ref. (1).

Source and Purity of Materials:
   (1) Commercial sample, purity 99.8 mole %.
   (2) Analytical grade sample.
   (4) No details given.

Estimated Errors:
   Solubility: δα = ± 2% (estimated by compiler)
   Temperature: δT/K = ± 0.2 (estimated by compiler)

References:
   1. Onda, K.; Sada, E.; Kobayashi, T.; Kito, S.; Ito, K., J. Chem. Eng. Jpn. 1970, 3, 18.