|Molar mass||167.21 g/mol|
|Appearance||white crystalline powder|
|Density||4.43 g/cm3 (20 °C)|
|Melting point||910 °C (1,670 °F; 1,180 K)|
|1.32 g/100mL (20 °C)
1.388 g/100mL (25 °C)
|C12/c1, No. 15|
|Lethal dose or concentration (LD, LC):|
LD50 (Median dose)
|98 mg/kg (oral, mouse)
98 mg/kg (oral, rat)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is: / ?)(|
Three crystalline phases of ZrF4 have been reported, α (monoclinic, β (tetragonal, Pearson symbol tP40, space group P42/m, No 84) and γ (unknown structure). β and γ phases are unstable and irreversibly transform into the α phase at 400 °C.
Together with uranium salt, zirconium fluoride can be a component of fuel-coolant in molten salt reactors. Mixture of sodium fluoride, zirconium fluoride, and uranium tetrafluoride (53-41-6 mol.%) was used as a coolant in the Aircraft Reactor Experiment. A mixture of lithium fluoride, beryllium fluoride, zirconium fluoride, and uranium-233 tetrafluoride was used in the Molten-Salt Reactor Experiment. (Uranium-233 is used in the thorium fuel cycle reactors.)
- "Zirconium compounds (as Zr)". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).
- Paul L. Brown, Federico J. Mompean, Jane Perrone, Myriam Illemassène (2005). Chemical thermodynamics of zirconium. Gulf Professional Publishing. p. 144. ISBN 0-444-51803-7.
- "Zirconium fluoride". American Elements. Retrieved 2009-07-07.
- "Method for preparing ultra-pure zirconium and hafnium tetrafluorides. United States Patent 4578252". Retrieved 2009-07-07.
- ORNL/TM-2006/12 Assessment of Candidate Molten Salt Coolants for the Advanced High-Temperature Reactor (AHTR), March 2006 (Accessed 2008/9/18)
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