Thulium(III) chloride
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| Names | |
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IUPAC name
Thulium(III) chloride
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| Other names
Thulium chloride, thulium trichloride
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| Identifiers | |
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3D model (JSmol)
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| ECHA InfoCard | 100.033.535 |
| EC Number | 236-904-9 |
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PubChem CID
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| RTECS number | XP0525000 |
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| Properties | |
| TmCl3 | |
| Molar mass | 275.292 g/mol |
| Appearance | yellow crystals |
| Density | 3.98 g/cm3 |
| Melting point | 824 °C (1,515 °F; 1,097 K) |
| Boiling point | 1,490 °C (2,710 °F; 1,760 K) |
| heptahydrate: very soluble | |
| Solubility | heptahydrate: very soluble in ethanol |
| Structure | |
| Monoclinic, mS16 | |
| C12/m1, No. 12 | |
| 6 | |
| Thermochemistry | |
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Std enthalpy of
formation (ΔfH |
966.6 kJ/mol |
| Hazards | |
| Main hazards | Xi (Irritant) |
| S-phrases (outdated) | S26, S36 |
| Related compounds | |
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Other anions
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Thulium(III) oxide |
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Other cations
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Erbium(III) chloride Ytterbium(III) chloride Thulium(II) chloride |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is   ?) |
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| Infobox references | |
Thulium(III) chloride or thulium trichloride is the chemical compound composed of thulium and chlorine with the formula TmCl3. It forms yellow crystals. Thulium(III) chloride has the YCl3 (AlCl3) layer structure with octahedral thulium ions.
The hydrated form of thulium(III) chloride can be obtained by adding thulium(III) oxide to concentrated hydrochloric acid. Thulium(III) chloride reacts with strong bases to make thulium(III) oxide.
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