| Thallium(I) fluoride | |
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Thallium(I) fluoride |
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Other names
Thallium monofluoride |
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| Identifiers | |
| CAS number | 7789-27-7 |
| PubChem | 62675 |
| ChemSpider | 56426 |
| EC number | 232-154-1 |
| RTECS number | XG4900000 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | TlF2• |
| Molar mass | 223.3817 g mol-1 |
| Exact mass | 223.972815475 g mol-1 |
| Appearance | White crystals |
| Density | 8.36 g cm-3 |
| Melting point |
327 °C, 600 K, 621 °F |
| Boiling point |
655 °C, 928 K, 1211 °F (decomposes) |
| Solubility in water | 786 g dm-3 (at 15 °C)[1] |
| Structure | |
| Crystal structure | Orthorhombic, oP8 |
| Space group | Fmmm, No. 28 |
| Hazards | |
| EU classification | T+ N |
| R-phrases | R26/28, R33, R51/53 |
| S-phrases | S13, S28, S45, S61[2] |
| Related compounds | |
| Other anions | Thallium(I) chloride |
| Other cations | Gallium(III) fluoride |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Thallium(I) fluoride (or thallous fluoride or thallium monofluoride) is the chemical compound composed of thallium and fluorine with the formula TlF. It consists of hard white orthorhombic crystals which are slightly deliquescent in humid air but revert to the anhydrous form in dry air[1]. It has a distorted sodium chloride (rock salt) crystal structure.[3][4]
Thallium(I) fluoride is unusual among the thallium(I) halides in that it is very soluble in water, while the others are not.[5]
Thallium(I) fluoride can be prepared by the reaction of thallium(I) carbonate with hydrofluoric acid.[3]
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