Names | |
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Preferred IUPAC name
Thallium(I) fluoride | |
Other names
Thallium monofluoride
Thallous fluoride | |
Identifiers | |
3D model (
JSmol)
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ChemSpider | |
ECHA InfoCard | 100.029.231 |
EC Number |
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PubChem
CID
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RTECS number |
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UNII | |
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Properties | |
TlF | |
Molar mass | 223.3817 g/mol |
Appearance | White crystals |
Density | 8.36 g cm−3 |
Melting point | 327 °C (621 °F; 600 K) |
Boiling point | 655 °C (1,211 °F; 928 K) (decomposes) |
78.6 g/100 mL (at 15 °C) [1] | |
Solubility | slightly soluble in ethanol |
−44.4·10−6 cm3/mol | |
Structure | |
Orthorhombic, oP8 | |
Fmmm, No. 28 | |
Hazards [2] | |
GHS labelling: | |
Danger | |
H300, H330, H373, H411 | |
P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501 | |
Related compounds | |
Other
anions
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Thallium(I) chloride |
Other
cations
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Gallium(III) 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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Thallium(I) fluoride is the inorganic compound with the formula TlF. It is a white solid, forming orthorhombic crystals. The solid is slightly deliquescent. [1] It has a distorted sodium chloride ( rock salt) crystal structure, [3] [4] due to the 6s2 inert pair on Tl+. [5]
This salt is unusual among the thallium(I) halides in that it is very soluble in water. [6]
Thallium(I) fluoride can be prepared by the reaction of thallium(I) carbonate with hydrofluoric acid. [3]