Article · Wikipedia archive · Last revised Jul 20, 2026

Titanium(III) fluoride

Titanium(III) fluoride is the inorganic compound with the formula TiF3. A violet, paramagnetic solid, it is one of two titanium fluorides, the other being titanium tetrafluoride. It adopts a defect perovskite-like structure such that each Ti center has octahedral coordination geometry, and each fluoride ligand is doubly bridging.

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Titanium(III) fluoride
Titanium(III) fluoride
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Names
IUPAC name
Titanium(III) fluoride
Other names
  • Titanium trifluoride
  • Titanous fluoride
  • Trifluorotitanium
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.379
EC Number
  • 236-732-4
  • InChI=1S/3FH.Ti/h3*1H;/q;;;+3/p-3 checkY
    Key: NLPMQGKZYAYAFE-UHFFFAOYSA-K checkY
  • InChI=1/3FH.Ti/h3*1H;/q;;;+3/p-3
    Key: NLPMQGKZYAYAFE-DFZHHIFOAU
  • F[Ti](F)F
Properties
TiF3
Molar mass 104.862 g·mol−1
Appearance violet to purple-red powder
Density 2.98 g/cm3
Melting point 1,200 °C (2,190 °F; 1,470 K)
Boiling point 1,400 °C (2,550 °F; 1,670 K)
soluble
1.3×10−9 cm3/mol
Structure
Rhombohedral, hR24
R-3c, No. 167
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Corrosive
GHS labelling:1
GHS05: Corrosive
Danger
H314
P260, P280, P303+P361+P353, P304+P340+P310, P305+P351+P338, P363
NFPA 704 (fire diamond)
2
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
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4
0
0
W
Related compounds
Other anions
Related compounds
 Titanium(IV) fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Titanium(III) fluoride is the inorganic compound with the formula TiF3. A violet, paramagnetic solid, it is one of two titanium fluorides, the other being titanium tetrafluoride.3 It adopts a defect perovskite-like structure such that each Ti center has octahedral coordination geometry, and each fluoride ligand is doubly bridging.4

Titanium(III) fluoride can be prepared by dissolution of titanium metal in hydrofluoric acid. It oxidizes to Titanium dioxide (TiO2) above 100 °C (212 °F) in air.3

References

References

  1. Sigma-Aldrich Co., Titanium (III) fluoride.
  2. "SDS - Titanium (III) fluoride". thermofisher.com. ThermoFisher Scientific. 26 March 2024. p. 3. Retrieved 25 October 2025.
  3. Meshri, Dayal T. (2000). "Fluorine Compounds, Inorganic, Titanium". Kirk-Othmer Encyclopedia of Chemical Technology. doi:10.1002/0471238961.2009200113051908.a01. ISBN 978-0-471-48494-3.
  4. H. Sowa; H. Ahsbahs (1998). "Pressure-Induced Octahedron Strain in VF3-Type Compounds". Acta Crystallogr. B54 (5): 578–584. Bibcode:1998AcCrB..54..578S. doi:10.1107/S0108768198001207.