SDS Volume (4797)
Volume 73. Metal and Ammonium Formate Systems, p 38
Original Measurements
Claudel, B.; Mentzen, B.; Bull. Soc. Chim. Fr. 5, 1547-1552 (1966).
Variables:
Room Temp: Composition at 25 °C
Prepared by:
St. Trendafilova, Chr. Balarew
Method/Apparatus/Procedure:
The initial nitrate was doped with $\ce{^{228}_{92}T}$h, in such a way to obtain $\pu{~10 \mu Ci/g}$ activity. The $\ce{Th(CHO2)4.3H2O}$ obtained from this nitrate was put in the contact with different organic solvents in saturated solutions. One mL of each solution was measured for radioactivity for a definite time. One $\pu{g/L}$ $\ce{Th(CHO2)4.3H2O}$ was used as standard solution giving $\pu{0.01 \mu Ci/mL}$.
Source and Purity of Materials:
- Thorium formate trihydrate was prepared from a dilute solution of formic acid (40%) and $\ce{Th(OH)4}$.
Components:
- Thorium(IV) formate $\ce{ Th(CHO2)4 }$ [562-99-2]; NIST WebBook
-
Ethylene oxide
[75-21-8];
NIST WebBook
Acetone $\ce{ C3H6O }$ [67-64-1]; NIST WebBook
Trichloroethylene $\ce{ C2HCl3 }$ [79-01-6]; NIST WebBook
Ethanol $\ce{ C2H6O }$ [64-17-5]; NIST WebBook
Benzene $\ce{ C6H6 }$ [71-43-2]; NIST WebBook
Tetrachloromethane $\ce{ CCl4 }$ [56-23-5]; NIST WebBook
2-Propanol $\ce{ C3H8O }$ [67-63-0]; NIST WebBook
Methanol $\ce{ CH4O }$ [67-56-1]; NIST WebBook
Water $\ce{ H2O }$ [7732-18-5]; NIST WebBook
Experimental Data
Solubility of $\ce{Th(CHO2)4.3H2O}$ (1) in different solvents (2)
| Different solvents (x8) | Cm1 (mg/L) | ||
|---|---|---|---|
Ethylene oxide
(
 )
|
10.7 | ||
|
Acetone
(
)
|
17.2 | ||
|
Trichloroethylene
(
)
|
17.2 | ||
|
Ethanol
(
)
|
23.6 | ||
|
Benzene
(
)
|
36.5 | ||
|
Tetrachloromethane
(
)
|
47.2 | ||
|
2-Propanol
(
)
|
57.2 | ||
|
Methanol
(
)
|
137.3 | ||
|
Water
(
)
|
6.73 | 0.175 | $\ce{Th(CHO2)4.3H2O}$ |
(a) This value was calculated by the compilers.
(b) The solid phase is: A = Th(CHO2)4ยท3H2O.