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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ferric hydroxide formate with Water
Components:
(1) Ferric hydroxide formate; Fe3(CHO2)7(OH)2.4H2O; [111195-22-5]
NIST Chemistry WebBook
for detail
(2) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Hampshire, C.H.; Pratt, W.R., Pharm. J. (London) 91, 138 (1913).
Variables:
Temperature = 17 ºC to 33.5 ºC
Prepared By:
St. Tepavitcharova and St. Trendafilova
Experimental Data:
(Notes on the Nomenclature)
(Please see footnotes following the table(s).)
Solubility of ferric formate in water.
t/°C
g
1
/g
2
g
1
/g
2
note
Phase
Mass Fraction w
1
a
m
1
[mol kg-1]
a
Solid Phase(s)
b
17
5.32
a
Liquid phase
5.05
0.11
A
20
5.53
a
Liquid phase
5.24
0.12
A
22
5.62
a
Liquid phase
5.32
0.12
A
24
5.71
a
Liquid phase
5.40
0.12
A
25.5
6.17
a
Liquid phase
5.81
0.13
A
27
6.49
a
Liquid phase
6.09
0.14
A
29
6.76
a
Liquid phase
6.33
0.14
A
33.5
7.19
a
Liquid phase
6.71
0.15
A
Notes:
a
These values were calculated by the compilers.
b
The solid phase is: A = Fe
3
(CHO
2
)
7
(OH)
2
•4H
2
O.
Method/Apparatus/Procedure:
Water and an excess of the crystallized salt were stirred in the apparatus described by Lumsden.
1
The formic acid content was determined by the method of Jones.
2
Iron was determined by direct ignition and weighed as the oxide.
Source and Purity of Materials:
The salt was prepared by dissolving ferric hydroxide in 50% CH
2
O
2
(d = 1.124) on a water bath, evaporating down, and cooling.
3
Estimated Errors:
Solubility: No information is given.
Temperature: No information is given.
References:
1
Lumsden; Trans. Chem. Soc.
81
, 355 (1902).
2
H. C. Jones, Amer. Chem. Journ.
17
, 539 (1895).
3
Bellini; Arch. Pharm.
247
, 423 (1909).