Chemical Properties of Thorium dioxide

InChI

InChI=1S/2O.Th/q2*-2;+4

InChI Key

ZCUFMDLYAMJYST-UHFFFAOYSA-N

Formula

O2Th

SMILES

[O]=[Th]=[O]

Molecular Weight¹

264.04

Other Names

• thorium(IV) oxide

• C_p,solid : Solid phase heat capacity (J/mol×K).
• Δ_fH°_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.

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

Cheméo can also estimate Normal Boiling Point Temperature, Normal melting (fusion) point, Critical Temperature, Critical Pressure, Critical Volume, Enthalpy of formation at standard conditions, Enthalpy of vaporization at standard conditions, Standard Gibbs free energy of formation, Acentric Factor, Log10 of Water solubility in mol/l for this compound, but they fall outside the models' validated range, so they are not shown here. Open the prediction tool to compute them on demand.

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	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	61.80	J/mol×K	310.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	62.80	J/mol×K	320.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	63.50	J/mol×K	330.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	64.20	J/mol×K	340.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	65.10	J/mol×K	350.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	65.60	J/mol×K	360.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	65.90	J/mol×K	370.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	66.80	J/mol×K	380.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	67.30	J/mol×K	390.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	67.70	J/mol×K	400.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	68.00	J/mol×K	410.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	68.40	J/mol×K	420.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	68.60	J/mol×K	430.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	68.90	J/mol×K	440.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	69.60	J/mol×K	450.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	69.80	J/mol×K	460.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	70.10	J/mol×K	470.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	70.20	J/mol×K	480.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	70.50	J/mol×K	490.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	70.70	J/mol×K	500.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	70.90	J/mol×K	510.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	71.20	J/mol×K	520.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	71.40	J/mol×K	530.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	71.70	J/mol×K	540.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	71.90	J/mol×K	550.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	72.00	J/mol×K	560.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	72.10	J/mol×K	570.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	72.30	J/mol×K	580.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	72.50	J/mol×K	590.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	72.50	J/mol×K	600.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	72.50	J/mol×K	610.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.00	J/mol×K	620.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.00	J/mol×K	630.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.30	J/mol×K	640.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.60	J/mol×K	650.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.50	J/mol×K	660.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.60	J/mol×K	670.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.60	J/mol×K	680.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.40	J/mol×K	690.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	73.80	J/mol×K	700.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	74.50	J/mol×K	710.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	74.50	J/mol×K	720.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	74.60	J/mol×K	730.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	74.70	J/mol×K	739.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	74.60	J/mol×K	750.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.00	J/mol×K	760.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.30	J/mol×K	770.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.30	J/mol×K	780.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.30	J/mol×K	790.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.70	J/mol×K	800.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.70	J/mol×K	810.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.70	J/mol×K	820.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	75.90	J/mol×K	830.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	76.00	J/mol×K	840.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	76.10	J/mol×K	850.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	76.40	J/mol×K	860.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method
Cp,solid	76.10	J/mol×K	870.00	Oxidation and thermo physical studies of non-stoichiometric thorium uranium oxides prepared by gel combustion method

Similar Compounds

Find more compounds similar to Thorium dioxide.

Mixtures

• Thorium dioxide + plutonium dioxide

Sources

• Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
• The high temperature heat capacity of the (Th, Pu)O2 system
• 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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