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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Barium formate with Formic acid and Water
Components:
(1) Barium formate; Ba(CHO2)2; [541-43-5]
NIST Chemistry WebBook
for detail
(2) Formic acid; CH2O2; [64-18-6]
NIST Chemistry WebBook
for detail
(3) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Dunn, L.J.; Philip, J.C., J. Chem. Soc. 658 (1934).
Variables:
Concentration = Composition at 25 ºC
Prepared By:
T. A. Ageyeva
Experimental Data:
(Notes on the Nomenclature)
(Please see footnotes following the table(s).)
Composition of saturated solutions at 25ºC.
Chemical
1
Mass Fraction w
1
10
0
* Mole Fraction
1
a
Chemical
2
Mass Fraction w
2
Mole Fraction
2
a
Chemical
3
Mass Fraction w
3
a
Mole Fraction
3
a
Solid Phase(s)
b
CH2O2
0.0
0.0
Ba(CHO2)2
23.51
2.38
H2O
76.49
97.62
A
CH2O2
5.39
2.83
Ba(CHO2)2
24.25
2.59
H2O
70.36
94.58
A
CH2O2
10.57
5.86
Ba(CHO2)2
25.03
2.89
H2O
64.40
91.25
A
CH2O2
15.41
9.01
Ba(CHO2)2
25.72
3.05
H2O
58.87
87.94
A
CH2O2
22.43
14.25
Ba(CHO2)2
26.87
3.46
H2O
50.70
82.29
A
CH2O2
22.38
14.05
Ba(CHO2)2
26.09
3.32
H2O
51.53
82.63
B
CH2O2
28.49
18.86
Ba(CHO2)2
24.71
3.27
H2O
46.80
78.11
B
CH2O2
38.07
26.83
Ba(CHO2)2
23.11
3.30
H2O
38.82
69.87
B
CH2O2
47.50
36.95
Ba(CHO2)2
22.56
3.56
H2O
29.94
59.49
B
CH2O2
58.40
53.33
Ba(CHO2)2
23.45
4.34
H2O
18.15
42.33
B
CH2O2
65.80
71.00
Ba(CHO2)2
25.72
5.63
H2O
8.48
23.37
B
Notes:
a
These values were calculated by the compiler.
b
The solid phases are: A = Ba(CHO
2
)
2
; B = Ba(CHO
2
)
2
•CH
2
O
2
.
Method/Apparatus/Procedure:
The isothermal method was used. The methods of analysis are not described. The composition of the solid phases was determined by the Schreinemakers method.
Source and Purity of Materials:
The salt was prepared from pure formic acid and barium carbonate or hydroxide; purity is not specified. Commercial formic acid was used.
Estimated Errors:
Solubility: No information is given.
Temperature: The temperature was controlled to within ± 0.01 °C. Nothing is said about the solubility values.