Holmium(III) bromide
| Names | |
|---|---|
| IUPAC name
 Tribromoholmium 
 | |
| Systematic IUPAC name
 Holmium tribromide  | |
| Identifiers | |
3D model (JSmol) 
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| ChemSpider | |
| ECHA InfoCard | 100.034.099 | 
| EC Number | 
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PubChem CID 
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| UNII | |
| UN number | 12141606 | 
CompTox Dashboard (EPA) 
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|
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| Properties | |
| Br3Ho | |
| Molar mass | 404.64[1] | 
| Appearance | Yellow Crystalline Solid | 
| Density | 4.85 g/cm3[1] | 
| Melting point | 919 °C (1,686 °F; 1,192 K)[1] | 
| Boiling point | 1,470 °C (2,680 °F; 1,740 K)[2] | 
| Will dissolve | |
| log P | 2.53680 | 
| Thermochemistry | |
Std enthalpy of 
formation (ΔfH⦵298)  | 
50.1 kJ/mol [3] | 
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards 
 | 
Irritant to eyes, and skin, and internal organs. | 
| GHS labelling: | |
 
 | |
| Warning | |
| H315, H319, H335[1] | |
| P261, P305+P351+P338[1]P271, P280, P302+P352, P304+P340, P362, P403+P233[4]P405, P501[5] | |
| NFPA 704 (fire diamond) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 
Infobox references 
 | |
Holmium(III) bromide is a crystalline compound made of one holmium atom and three bromine atoms. Holmium bromide is a yellow powder at room temperature.[2] Holmium bromide is hygroscopic.[6] Holmium bromide is odorless.[5]
Reactions
Holmium(III) bromide is formed as a result of the reaction:[7]
- 2 Ho(s) + 3 Br2(g) → 2 HoBr3(s)
 
Holmium(III) bromide reacts with strong oxidising agents. When involved in a fire, holmium bromide may release hydrogen bromide, and metal oxide fumes.[5]
References
- ^ a b c d e "Holmium(III) bromide anhydrous, powder, 99.99% trace metals basis | Sigma-Aldrich". www.sigmaaldrich.com. Retrieved 21 December 2016.
 - ^ a b Elements, American. "Holmium Bromide". American Elements. Retrieved 21 December 2016.
 - ^ Haynes, William M. (2013). CRC handbook of chemistry and physics : a ready-reference book of chemical and physical data (94th ed.). CRC Press. p. 148. ISBN 9781466571150.
 - ^ "Holmium Bromide | ProChem, Inc". prochemonline.com. Retrieved 21 December 2016.
 - ^ a b c "Holmium(III) bromide". Fischersci. Archived from the original on 21 December 2016. Retrieved 21 December 2016.
 - ^ "HOLMIUM BROMIDE | 13825-76-8". www.chemicalbook.com. Retrieved 21 December 2016.
 - ^ Winter, Mark. "Holmium»reactions of elements [WebElements Periodic Table]". www.webelements.com. Retrieved 21 December 2016.
 

