Hafnium oxide
Other name:Hafnium dioxide
CAS number: 12055-23-1
EINECS No. : 235-013-2
Molecular formula: HfO2
Molecular weight: 210.4888
Melting point: 2812℃
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Purity: 99.9%
Product characteristics: Hafnium dioxide (HfO2) is an oxide of hafnium, white solid under normal temperature and pressure. White powder, monoclinic, tetragonal and cubic crystal structure, melting point 2780~2920K. Boiling point 5400K. Thermal expansion coefficient 5.8×10-6/℃. Insoluble in water, hydrochloric acid and nitric acid, soluble in concentrated sulfuric acid and hydrofluoric acid. It is prepared by thermal decomposition or hydrolysis of hafnium sulfate, hafnium oxychloride and other compounds. For the production of metal hafnium and hafnium alloy raw material. Used as refractory, antiradioactive coating and catalyst.
Purpose: Raw material for production of hafnium and hafnium alloys. Used as refractory, antiradioactive coating and catalyst.
Packaging: Bottled.
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