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| Names | |
|---|---|
| Preferred IUPAC name Thallium(I) fluoride | |
| Other names Thallium monofluoride Thallous fluoride | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider |
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| ECHA InfoCard | 100.029.231 |
| EC Number |
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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 inethanol |
| −44.4·10−6 cm3/mol | |
| Structure | |
| Orthorhombic,oP8 | |
| Fmmm, No. 28 | |
| Hazards[2] | |
| GHS labelling: | |
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| 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 | |
Otheranions | Thallium(I) chloride |
Othercations | Gallium(III) fluoride |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Thallium(I) fluoride is theinorganic compound with theformula TlF. It is a white solid, forming orthorhombic crystals. The solid is slightlydeliquescent.[1] It has a distortedsodium chloride (rock salt) crystal structure,[3][4] due to the 6s2inert pair on Tl+.[5]
This salt is unusual among thethallium(I) halides in that it is very soluble in water.[6]
Thallium(I) fluoride can be prepared by the reaction ofthallium(I) carbonate withhydrofluoric acid.[3]
