IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Sodium formate with Ethanol and Water

Components:
   (1) Ethanol; C2H6O; [64-17-5]  NIST Chemistry WebBook for detail
   (2) Sodium formate; NaCHO2; [141-53-7]  NIST Chemistry WebBook for detail
   (3) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Mairesse-Gawel, W.; Mairesse, G.; Vandorpe, B.; Heubel, J., Rev. Chim. Min. 7, 273 (1970).

Variables:

   Concentration = Composition at 298.7 K, 300.7 K and 303.2 K.

Prepared By:
   T. A. Ageyeva

Experimental Data:   (Notes on the Nomenclature)
(Please see footnotes following the table(s).)

Solubility values in the NaCHO₂-C₂H₆O-H₂O system.
T/K	Chemical₁	Mass Fraction w₁	10⁰ * Mole Fraction₁^a	Chemical₂	Mass Fraction w₂	Mole Fraction₂^a	Chemical₃	Mass Fraction w₃	Mole Fraction₃^a	Solid Phase(s)^b
298.7 K	NaCHO2	48.6	20.3	C2H6O	0.0	0.0	H2O a	51.4	80.0	A
298.7 K	NaCHO2	48.5	20.0	C2H6O	0.0	0.0	H2O a	51.5	80.0	A
298.7 K	NaCHO2	47.6	19.7	C2H6O	1.6	0.98	H2O a	50.8	79.3	A
298.7 K	NaCHO2	45.6	19.0	C2H6O	4.6	2.8	H2O a	49.8	78.2	A
298.7 K	NaCHO2	44.6	18.6	C2H6O	6.2	3.8	H2O a	49.2	77.6	A
298.7 K	NaCHO2	44.8	18.7	C2H6O	6.1	3.8	H2O a	49.1	77.5	A
298.7 K	NaCHO2	44.5	18.6	C2H6O	6.5	4.0	H2O a	49.0	77.4	A
298.7 K	NaCHO2	44.5	18.7	C2H6O	6.7	4.2	H2O a	48.8	77.2	B
298.7 K	NaCHO2	44.2	18.5	C2H6O	6.9	4.3	H2O a	48.9	77.2	C
298.7 K	NaCHO2	44.3	18.6	C2H6O	6.9	4.3	H2O a	48.8	77.2	D
298.7 K	NaCHO2	43.3	18.2	C2H6O	8.4	5.2	H2O a	48.3	76.6	D
298.7 K	NaCHO2	43.1	18.1	C2H6O	8.7	5.4	H2O a	48.2	76.5	D
298.7 K	NaCHO2	43.9	18.8	C2H6O	9.4	5.9	H2O a	46.7	75.3	D
298.7 K	NaCHO2	42.5	17.7	C2H6O	8.7	5.4	H2O a	48.8	79.9	D
298.7 K	NaCHO2	42.3	17.7	C2H6O	9.1	5.6	H2O a	48.6	76.7	D
298.7 K	NaCHO2	42.9	18.0	C2H6O	8.9	5.5	H2O a	48.2	76.5	D
298.7 K	NaCHO2	7.9	4.1	C2H6O	70.0	53.1	H2O a	22.1	42.9	D
298.7 K	NaCHO2	7.8	4.0	C2H6O	69.2	51.9	H2O a	23.0	44.1	D
298.7 K	NaCHO2	7.6	3.9	C2H6O	69.5	52.2	H2O a	22.9	44.0	D
298.7 K	NaCHO2	7.7	3.9	C2H6O	69.7	52.5	H2O a	22.6	43.5	D
298.7 K	NaCHO2	8.0	4.1	C2H6O	69.8	52.9	H2O a	22.2	43.0	D
298.7 K	NaCHO2	7.9	4.1	C2H6O	70.1	53.2	H2O a	22.0	42.7	D
298.7 K	NaCHO2	3.5	1.9	C2H6O	79.9	64.1	H2O a	16.6	34.0	D
298.7 K	NaCHO2	1.5	0.91	C2H6O	90.4	80.6	H2O a	8.1	18	D
298.7 K	NaCHO2	0.2	0.1	C2H6O	99.8	99.9	H2O a	0.0	0.0	D
300.7 K	NaCHO2	50.4	31.2	C2H6O	0.0	0.0	H2O a	49.6	78.8	B
300.7 K	NaCHO2	50.2	21.4	C2H6O	0.0	0.0	H2O a	49.8	78.6	A
300.7 K	NaCHO2	50.0	21.0	C2H6O	0.3	0.2	H2O a	49.7	78.8	B
300.7 K	NaCHO2	49.9	21.0	C2H6O	0.6	0.4	H2O a	49.5	78.6	C
300.7 K	NaCHO2	49.3	20.7	C2H6O	1.3	0.81	H2O a	49.4	78.5	D
300.7 K	NaCHO2	48.7	20.5	C2H6O	1.9	1.2	H2O a	49.4	78.4	D
300.7 K	NaCHO2	48.9	20.7	C2H6O	2.4	1.5	H2O a	48.7	77.8	D
300.7 K	NaCHO2	47.6	20.0	C2H6O	3.2	2.0	H2O a	49.2	78.0	D
300.7 K	NaCHO2	46.7	19.6	C2H6O	4.0	2.5	H2O a	49.3	78.0	D
300.7 K	NaCHO2	46.9	19.7	C2H6O	4.2	2.6	H2O a	48.9	77.7	D
300.7 K	NaCHO2	45.0	19.1	C2H6O	7.1	4.4	H2O a	47.9	76.5	D
300.7 K	NaCHO2	44.4	18.7	C2H6O	7.3	4.5	H2O a	48.3	76.8	D
300.7 K	NaCHO2	44.0	18.6	C2H6O	8.1	5.1	H2O a	47.9	76.4	D
300.7 K	NaCHO2	43.3	18.4	C2H6O	9.4	5.9	H2O a	47.3	75.7	E
300.7 K	NaCHO2	8.3	4.4	C2H6O	71.8	56.0	H2O a	19.9	39.7	E
300.7 K	NaCHO2	5.9	3.2	C2H6O	77.3	62.2	H2O a	16.8	34.6	D
300.7 K	NaCHO2	4.8	2.6	C2H6O	78.1	62.5	H2O a	17.1	35.0	D
300.7 K	NaCHO2	4.8	2.7	C2H6O	79.7	65.0	H2O a	15.5	32.3	D
300.7 K	NaCHO2	3.1	1.7	C2H6O	82.9	68.6	H2O a	14.0	29.6	D
300.7 K	NaCHO2	1.5	0.88	C2H6O	88.4	76.7	H2O a	10.1	22.4	D
300.7 K	NaCHO2	0.7	0.4	C2H6O	94.7	88.6	H2O a	4.6	11	D
300.7 K	NaCHO2	0.1	0.07	C2H6O	99.8	99.7	H2O a	0.1	0.3	D
303.2 K	NaCHO2	50.7	21.4	C2H6O	0.0	0.0	H2O a	49.3	78.6	D
303.2 K	NaCHO2	49.2	20.7	C2H6O	1.3	0.81	H2O a	49.5	78.5	D
303.2 K	NaCHO2	48.2	20.3	C2H6O	2.9	1.8	H2O a	48.9	77.9	D
303.2 K	NaCHO2	46.6	19.6	C2H6O	4.7	2.9	H2O a	48.7	77.4	D
303.2 K	NaCHO2	46.4	19.7	C2H6O	5.6	3.5	H2O a	48.0	76.8	D
303.2 K	NaCHO2	44.4	18.8	C2H6O	8.0	5.0	H2O a	47.6	76.2	D
303.2 K	NaCHO2	43.8	18.6	C2H6O	9.1	5.7	H2O a	47.1	75.6	E
303.2 K	NaCHO2	8.5	4.5	C2H6O	71.8	56.1	H2O a	19.7	39.4	E
303.2 K	NaCHO2	7.8	4.1	C2H6O	71.9	55.7	H2O a	20.3	40.2	D
303.2 K	NaCHO2	5.4	2.9	C2H6O	76.2	60.1	H2O a	18.4	37.1	D
303.2 K	NaCHO2	2.4	1.4	C2H6O	85.4	72.2	H2O a	12.2	26.4	D
303.2 K	NaCHO2	1.0	0.61	C2H6O	91.7	82.5	H2O a	7.3	17	D
303.2 K	NaCHO2	0.5	0.3	C2H6O	95.5	90.0	H2O a	4.0	9.6	D
303.2 K	NaCHO2	0.3	0.2	C2H6O	99.7	99.8	H2O a	0.0	0.0	D

Notes:
   ^a  These values were calculated by the compiler.
   ^b  The solid phases are: A = NaCHO₂•2H₂O; B = NaCHO₂ unstable; C = NaCHO₂ + NaCHO₂•2H₂O; D = NaCHO₂; E = NaCHO₂ exfoliation.

Method/Apparatus/Procedure:
   The isothermal method was used. However, ethanol was determined by the oxidimetric method.

Source and Purity of Materials:
   No information is given. But it appears that the source and purity of these materials were the same as those reported earlier.¹

Estimated Errors:

   Temperature: ± 0.3 K; solubility: ± 0.1 mass %.

References:
   ¹J. Heubel, B. Vandorpe, and B.Devallez, Bull. S. Chim. 531 (1963).