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]
Quick Facts Names, Identifiers ...
Thallium(I) fluoride
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| Names |
| Preferred IUPAC name
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| Other names
Thallium monofluoride
Thallous fluoride |
| Identifiers |
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| 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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InChI=1S/FH.Tl/h1H;/q;+1/p-1 N Key: CULOEOTWMUCRSJ-UHFFFAOYSA-M N
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| Properties |
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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) |
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78.6 g/100 mL (at 15 °C)[1] |
| Solubility |
slightly soluble in ethanol |
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−44.4·10−6 cm3/mol |
| Structure |
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Orthorhombic, oP8 |
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Fmmm, No. 28 |
| Hazards[2] |
| GHS labelling: |
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Danger |
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H300, H330, H373, H411 |
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P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501 |
| Related compounds |
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Thallium(I) chloride
Thallium(I) bromide
Thallium(I) iodide |
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Gallium(III) fluoride
Indium(III) fluoride
Thallium(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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This salt is unusual among the thallium(I) halides in that it is very soluble in water.[6]
