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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Strontium formate with Formic acid and Water
Components:
(1) Formic acid; CH2O2; [64-18-6]
NIST Chemistry WebBook
for detail
(2) Strontium formate; Sr(CHO2)2; [592-89-2]
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
Sr(CHO2)2
12.52
1.43
H2O
87.48
98.57
A
CH2O2
18.01
9.15
Sr(CHO2)2
13.30
1.75
H2O
68.69
89.10
A
CH2O2
34.24
20.18
Sr(CHO2)2
14.17
2.16
H2O
51.59
77.66
A
CH2O2
41.50
26.62
Sr(CHO2)2
15.28
2.54
H2O
43.22
70.84
A
CH2O2
48.00
33.52
Sr(CHO2)2
16.40
2.97
H2O
35.60
63.51
A
CH2O2
53.40
40.92
Sr(CHO2)2
18.27
3.63
H2O
28.33
55.45
A
CH2O2
57.30
47.63
Sr(CHO2)2
20.07
4.32
H2O
22.63
48.05
B
CH2O2
61.50
54.54
Sr(CHO2)2
20.51
4.71
H2O
17.99
40.75
B
CH2O2
63.30
57.84
Sr(CHO2)2
20.74
4.91
H2O
15.96
37.25
B
CH2O2
64.70
61.65
Sr(CHO2)2
20.94
4.94
H2O
14.36
33.41
B
CH2O2
70.50
74.01
Sr(CHO2)2
22.04
5.99
H2O
7.46
20.00
C
CH2O2
72.30
79.19
Sr(CHO2)2
22.54
6.39
H2O
5.16
14.43
C
CH2O2
74.30
85.32
Sr(CHO2)2
23.03
6.85
H2O
2.67
7.83
C
Notes:
a
These values were calculated by the compiler.
b
The solid phases are: A = Sr(CHO
2
)
2
•2H
2
O; B = Sr(CHO
2
)
2
; C = 2Sr(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 strontium 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.