Potassium hexafluorotitanate

Potassium hexafluorotitanate is an inorganic compound of potassium, fluorine, and titanium with the chemical formula K₂TiF₆.^[2][3]

Potassium hexafluorotitanate

Names
Other names Potassium hexafluorotitanate(IV), dipotassium hexafluorotitanate, titanium potassium hexafluoride
Identifiers
CAS Number	16919-27-0 Y
3D model (JSmol)	Interactive image
ChemSpider	9239654
ECHA InfoCard	100.037.230
EC Number	240-969-9
PubChem CID	11064502
CompTox Dashboard (EPA)	DTXSID7029740
InChI InChI=1S/6FH.2K.Ti/h6*1H;;;/q;;;;;;2*+1;+4/p-6 Key: RXCBCUJUGULOGC-UHFFFAOYSA-H
SMILES [F-].[F-].F[Ti](F)(F)F.[K+].[K+]
Properties
Chemical formula	F6K2Ti
Molar mass	240.054 g·mol−1
Appearance	White powder
Melting point	780 °C (1,440 °F; 1,050 K)
Boiling point	235–237 °C (455–459 °F; 508–510 K)
Solubility in water	soluble in hot water
Hazards
GHS labelling:[1]
Pictograms
Signal word	Danger
Hazard statements	H302, H317, H318
Precautionary statements	P261, P280, P301, P302, P312, P338, P351, P352
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Hydrofluoric acid reacts with metatitanic acid to generate fluorotitanic acid; then it is neutralized with potassium hydroxide to produce potassium hexafluorotitanate.

Physical properties

The compound forms white powder.^[4] Potassium hexafluorotitanate is soluble in hot water, slightly soluble in cold water, and inorganic acid. Insoluble in ammonia.^[5]

Chemical properties

Reacts with sodium to form titanium, potassium monofluoride and sodium monofluoride:^[6][7]

K₂TiF₆ + 4Na → Ti + 2KF + 4NaF

Uses

The compound is used as an analytical reagent, also used in the manufacture of titanic acid and metallic titanium. Can also be used as a catalyst for polypropylene synthesis. It is a component of the metal phosphating surface adjustment.^[8]

References

1. "Dipotassium hexafluorotitanate". pubchem.ncbi.nlm.nih.gov. Retrieved 15 February 2024.
2. "Potassium hexafluorotitanate(IV)". Sigma Aldrich. Retrieved 15 February 2024.
3. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3235. ISBN 978-0-412-30120-9. Retrieved 15 February 2024.
4. "Potassium Hexafluorotitanate(IV)". American Elements. American Elements. Retrieved 15 February 2024.
5. "Potassium hexafluorotitanate, 97%, Thermo Scientific Chemicals". Fisher Scientific. Retrieved 15 February 2024.
6. "The reaction of interaction of hexafluorotitanate and sodium with the formation of the titanium, potassium fluoride and sodium fluoride". chemiday.com. Retrieved 15 February 2024.
7. Ermakov, A. A.; Kliment'Eva, G. A.; Andrianov, A. M.; Brusilovskii, Yu. E.; Kovalevskaya, I. P. (28 January 1997). "ChemInform Abstract: Reaction of Potassium Hexafluorotitanate with Sodium, Potassium and Ammonium Hydroxides and Carbonates". ChemInform. 28 (5). doi:10.1002/chin.199705020.
8. "POTASSIUM HEXAFLUOROTITANATE(IV)". chembk.com. Retrieved 15 February 2024.