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Hafnium(IV) oxide, Hafnium dioxide, Hafnia
H 7056
HfO2
28259090
18%
12055-23-1
210.49
Bottle / Drum
H 7056 (OTTOKEMI) Hafnium oxide granules, 1-5 mm, 99.99% Cas 12055-23-1 - used in optical coatings, and as a high-κ dielectric in DRAM capacitors and in advanced metal-oxide-semiconductor devices.
Hafnium oxide is the inorganic compound with the formula HfO2. Also known as hafnia, this colourless solid is one of the most common and stable compounds of hafnium. It is an electrical insulator with a band gap of 5.3~5.7 eV. Hafnium dioxide is an intermediate in some processes that give hafnium metal.Hafnium(IV) oxide is quite inert. It reacts with strong acids such as concentrated sulfuric acid and with strong bases. It dissolves slowly in hydrofluoric acid to give fluorohafnate anions. At elevated temperatures, it reacts with chlorine in the presence of graphite or carbon tetrachloride to give hafnium tetrachloride.
Metal & ceramic science, Salts
99.99%
Granules
White
1-5 mm
9.68 g/mL at 25 °C(lit.)
Safety Statements 22-24/25WGK Germany 3
DisclaimerThe above particulars do not release the customer from the obligation to carry out an inspection of goods received. For laboratory use only. Not for drug, medical, household, or any other unauthorized application. We assume no liability for misuse or unauthorized application of the product. Please test before use.