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Properties of HfO2

Properties of HfO2 (Hafnium(IV) oxide):

Compound NameHafnium(IV) oxide
Chemical FormulaHfO2
Molar Mass210.4888 g/mol

Chemical structure
HfO2 (Hafnium(IV) oxide) - Chemical structure
Lewis structure
3D molecular structure
Physical properties
Appearanceoff-white powder
Solubilityinsoluble
Density9.6800 g/cm³
Helium 0.0001786
Iridium 22.562
Melting2,758.00 °C
Helium -270.973
Hafnium carbide 3958
Boiling5,400.00 °C
Helium -268.928
Tungsten carbide 6000
Thermochemistry
Enthalpy of Formation111.00 kJ/mol
Adipic acid -994.3
Tricarbon 820.06

Alternative Names

Hafnium dioxide
Hafnia

Elemental composition of HfO2
ElementSymbolAtomic weightAtomsMass percent
HafniumHf178.49184.7979
OxygenO15.9994215.2021
Mass Percent CompositionAtomic Percent Composition
Hf: 84.80%O: 15.20%
Hf Hafnium (84.80%)
O Oxygen (15.20%)
Hf: 33.33%O: 66.67%
Hf Hafnium (33.33%)
O Oxygen (66.67%)
Mass Percent Composition
Hf: 84.80%O: 15.20%
Hf Hafnium (84.80%)
O Oxygen (15.20%)
Atomic Percent Composition
Hf: 33.33%O: 66.67%
Hf Hafnium (33.33%)
O Oxygen (66.67%)
Identifiers
CAS Number12055-23-1
SMILESO=[Hf]=O
Hill formulaHfO2

Related
Molecular weight calculator
Oxidation state calculator

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