Input interpretation
thorium(IV) oxide
Chemical names and formulas
formula | ThO_2 Hill formula | O_2Th name | thorium(IV) oxide IUPAC name | oxygen(-2) anion; thorium(+4) cation alternate names | thoria | thorium anhydride | thorium dioxide | thorium oxide | thorotrast mass fractions | O (oxygen) 12.1% | Th (thorium) 87.9%
Structure diagram
Structure diagram
Basic properties
molar mass | 264.036 g/mol phase | solid (at STP) melting point | 3390 °C boiling point | 4400 °C density | 10 g/cm^3 solubility in water | insoluble
Units
Solid properties (at STP)
density | 10 g/cm^3
Units
Thermodynamic properties
specific free energy of formation Δ_fG° | solid | -4.428 kJ/g molar free energy of formation Δ_fG° | solid | -1169 kJ/mol specific heat of formation Δ_fH° | solid | -4.645 kJ/g molar heat of formation Δ_fH° | solid | -1226 kJ/mol molar heat of fusion | 90 kJ/mol | specific heat of fusion | 0.3 kJ/g | (at STP)
Chemical identifiers
![CAS number | 1314-20-1 PubChem CID number | 169899 SMILES identifier | [O-2].[O-2].[Th+4] InChI identifier | InChI=1/2O.Th/q2*-2;+4 EU number | 253-453-3 Gmelin number | 1503 RTECS number | XO6950000](../image_source/f5fecb3ff72c357ce9e1614b6212a747.png)
CAS number | 1314-20-1 PubChem CID number | 169899 SMILES identifier | [O-2].[O-2].[Th+4] InChI identifier | InChI=1/2O.Th/q2*-2;+4 EU number | 253-453-3 Gmelin number | 1503 RTECS number | XO6950000
Toxicity properties
RTECS classes | tumorigen | human data
Ion equivalents
Th^(2+) (thorium(II) cation) | 1 (O_2)^(2-) (peroxide anion) | 1