Hafnium nitrate


Hafnium(IV) nitrate is an inorganic compound, a salt of hafnium and nitric acid with the chemical formula Hf(NO3)4.[2][3][4]

Hafnium nitrate
Hafnium nitrate.svg
Other names
Hafnium tetranitrate
  • 15509-05-4
3D model (JSmol)
  • Interactive image
  • 146363
EC Number
  • 239-536-7
  • 167292
  • DTXSID30890759 Edit this at Wikidata
  • InChI=1S/Hf.4NO3/c;4*2-1(3)4/q+4;4*-1
  • [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Hf+4]
Molar mass 426.53 g/mol
Appearance White cristals
moderately soluble[1]
GHS labelling:
GHS03: OxidizingGHS07: Exclamation mark
H272, H315, H319, H335
P210, P220, P221, P305, P338, P405, P501
Related compounds
Related compounds
Thorium nitrate, Zirconium nitrate, titanium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references


Reaction of hafnium tetrachloride and dinitrogen pentoxide.[5]


Hafnium nitrate is slightly volatile, and can be sublimed at 110°c and 0.1 mmHg.[6]

Hafnium nitrate decomposes on heating (≥160°C) to HfO(NO3)2 and then to HfO2.[6]


Hafnium nitrate can be used for the preparation of materials containing hafnium dioxide.[6]


  1. ^ "Hafnium Nitrate (CAS: 15509-05-4) | Stanford Advanced Materials". samaterials.com. Retrieved 29 October 2021.
  2. ^ "Hafnium(IV) nitrate". Sigma Aldrich. Retrieved 29 October 2021.
  3. ^ "Hafnium Nitrate". American Elements. Retrieved 29 October 2021.
  4. ^ The Metallurgy of Hafnium. Naval Reactors, Division of Reactor Development, U.S. Atomic Energy Commission. 1960. p. 31. Retrieved 29 October 2021.
  5. ^ Zhuang, Weiwei; Conley, John F.; Ono, Yoshi; Evans, David R.; Solanki, R. (January 2002). "Hafnium Nitrate Precursor Synthesis and HfO2 Thin Film Deposition". Integrated Ferroelectrics. 48 (1): 3–12. doi:10.1080/10584580215449.
  6. ^ a b c Conley, J. F.; Ono, Y.; Zhuang, W.; Tweet, D. J.; Gao, W.; Mohammed, S. K.; Solanki, R. (2002). "Atomic Layer Deposition of Hafnium Oxide Using Anhydrous Hafnium Nitrate". Electrochemical and Solid-State Letters. 5 (5): C57. doi:10.1149/1.1462875. ISSN 1099-0062. Retrieved 29 October 2021.