- InChI
- InChI=1S/2O.Th
- InChI Key
- ZCUFMDLYAMJYST-UHFFFAOYSA-N
- Formula
- O2Th
- SMILES
- O=[Th]=O
- Molecular Weight1
- 264.04
- CAS
- 1314-20-1
- Other Names
-
- thorium(IV) oxide
- Cp,solid : Solid phase heat capacity (J/mol×K).
- ΔfH°solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
- IE : Ionization energy (eV).
- S°solid,1 bar : Solid phase molar entropy at standard conditions (J/mol×K).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ΔfH°solid | -1226.40 ± 3.50 | kJ/mol | NIST |
| IE | [8.00; 10.90] | eV |
|
| IE | 8.70 ± 0.15 | eV | NIST |
| IE | 8.00 ± 1.00 | eV | NIST |
| IE | 8.70 ± 0.15 | eV | NIST |
| IE | 10.90 | eV | NIST |
| S°solid,1 bar | 65.23 ± 0.20 | J/mol×K | NIST |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,solid | [61.80; 76.40] | J/mol×K | [300.00; 870.00] |
|
| Cp,solid | 62.10 | J/mol×K | 300.00 | Oxidati... |
| Cp,solid | 61.80 | J/mol×K | 310.00 | Oxidati... |
| Cp,solid | 62.80 | J/mol×K | 320.00 | Oxidati... |
| Cp,solid | 63.50 | J/mol×K | 330.00 | Oxidati... |
| Cp,solid | 64.20 | J/mol×K | 340.00 | Oxidati... |
| Cp,solid | 65.10 | J/mol×K | 350.00 | Oxidati... |
| Cp,solid | 65.60 | J/mol×K | 360.00 | Oxidati... |
| Cp,solid | 65.90 | J/mol×K | 370.00 | Oxidati... |
| Cp,solid | 66.80 | J/mol×K | 380.00 | Oxidati... |
| Cp,solid | 67.30 | J/mol×K | 390.00 | Oxidati... |
| Cp,solid | 67.70 | J/mol×K | 400.00 | Oxidati... |
| Cp,solid | 68.00 | J/mol×K | 410.00 | Oxidati... |
| Cp,solid | 68.40 | J/mol×K | 420.00 | Oxidati... |
| Cp,solid | 68.60 | J/mol×K | 430.00 | Oxidati... |
| Cp,solid | 68.90 | J/mol×K | 440.00 | Oxidati... |
| Cp,solid | 69.60 | J/mol×K | 450.00 | Oxidati... |
| Cp,solid | 69.80 | J/mol×K | 460.00 | Oxidati... |
| Cp,solid | 70.10 | J/mol×K | 470.00 | Oxidati... |
| Cp,solid | 70.20 | J/mol×K | 480.00 | Oxidati... |
| Cp,solid | 70.50 | J/mol×K | 490.00 | Oxidati... |
| Cp,solid | 70.70 | J/mol×K | 500.00 | Oxidati... |
| Cp,solid | 70.90 | J/mol×K | 510.00 | Oxidati... |
| Cp,solid | 71.20 | J/mol×K | 520.00 | Oxidati... |
| Cp,solid | 71.40 | J/mol×K | 530.00 | Oxidati... |
| Cp,solid | 71.70 | J/mol×K | 540.00 | Oxidati... |
| Cp,solid | 71.90 | J/mol×K | 550.00 | Oxidati... |
| Cp,solid | 72.00 | J/mol×K | 560.00 | Oxidati... |
| Cp,solid | 72.10 | J/mol×K | 570.00 | Oxidati... |
| Cp,solid | 72.30 | J/mol×K | 580.00 | Oxidati... |
| Cp,solid | 72.50 | J/mol×K | 590.00 | Oxidati... |
| Cp,solid | 72.50 | J/mol×K | 600.00 | Oxidati... |
| Cp,solid | 72.50 | J/mol×K | 610.00 | Oxidati... |
| Cp,solid | 73.00 | J/mol×K | 620.00 | Oxidati... |
| Cp,solid | 73.00 | J/mol×K | 630.00 | Oxidati... |
| Cp,solid | 73.30 | J/mol×K | 640.00 | Oxidati... |
| Cp,solid | 73.60 | J/mol×K | 650.00 | Oxidati... |
| Cp,solid | 73.50 | J/mol×K | 660.00 | Oxidati... |
| Cp,solid | 73.60 | J/mol×K | 670.00 | Oxidati... |
| Cp,solid | 73.60 | J/mol×K | 680.00 | Oxidati... |
| Cp,solid | 73.40 | J/mol×K | 690.00 | Oxidati... |
| Cp,solid | 73.80 | J/mol×K | 700.00 | Oxidati... |
| Cp,solid | 74.50 | J/mol×K | 710.00 | Oxidati... |
| Cp,solid | 74.50 | J/mol×K | 720.00 | Oxidati... |
| Cp,solid | 74.60 | J/mol×K | 730.00 | Oxidati... |
| Cp,solid | 74.70 | J/mol×K | 739.00 | Oxidati... |
| Cp,solid | 74.60 | J/mol×K | 750.00 | Oxidati... |
| Cp,solid | 75.00 | J/mol×K | 760.00 | Oxidati... |
| Cp,solid | 75.30 | J/mol×K | 770.00 | Oxidati... |
| Cp,solid | 75.30 | J/mol×K | 780.00 | Oxidati... |
| Cp,solid | 75.30 | J/mol×K | 790.00 | Oxidati... |
| Cp,solid | 75.70 | J/mol×K | 800.00 | Oxidati... |
| Cp,solid | 75.70 | J/mol×K | 810.00 | Oxidati... |
| Cp,solid | 75.70 | J/mol×K | 820.00 | Oxidati... |
| Cp,solid | 75.90 | J/mol×K | 830.00 | Oxidati... |
| Cp,solid | 76.00 | J/mol×K | 840.00 | Oxidati... |
| Cp,solid | 76.10 | J/mol×K | 850.00 | Oxidati... |
| Cp,solid | 76.40 | J/mol×K | 860.00 | Oxidati... |
| Cp,solid | 76.10 | J/mol×K | 870.00 | Oxidati... |
Similar Compounds
Find more compounds similar to thorium dioxide.
Mixtures
Sources
- High temperature phase transition of mixed (PuO2 + ThO2) investigated by laser melting
- Thermochemistry of UO2 - ThO2 and UO2 - ZrO2 fluorite solid solutions
- Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
- NIST Webbook
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