Cadmium bromide (original) (raw)
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Cadmium bromide
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| Names | |
| IUPAC name Cadmium(II) bromide | |
| Other namesCadmium dibromide | |
| Identifiers | |
| CAS Number | 7789-42-6  Y13464-92-1 (tetrahydrate) Y |
| 3D model (JSmol) | Interactive image |
| ChemSpider | 23011 Y |
| ECHA InfoCard | 100.029.241  |
| EC Number | 232-165-1 |
| PubChem CID | 24609 |
| RTECS number | EU9935000 |
| UNII | 7726AXS0WH Y |
| CompTox Dashboard (EPA) | DTXSID30895027 |
| InChI InChI=1S/2BrH.Cd/h2*1H;/q;;+2/p-2 YKey: KPWJBEFBFLRCLH-UHFFFAOYSA-L YInChI=1/2BrH.Cd/h2*1H;/q;;+2/p-2Key: KPWJBEFBFLRCLH-NUQVWONBAB |
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| SMILES Br[Cd]Br | |
| Properties | |
| Chemical formula | CdBr2 |
| Molar mass | 272.22 g/mol |
| Appearance | white solid |
| Density | 5.192 g/cm3, solid |
| Melting point | 568 °C (1,054 °F; 841 K) |
| Boiling point | 844 °C (1,551 °F; 1,117 K) |
| Solubility in water | 56.3 g/100 mL (0 °C) 98.8 g/100 mL (20 °C) 160 g/100 mL (100 °C) |
| Solubility | soluble in alcohol, ether, acetone and liquid ammonia. |
| Magnetic susceptibility (χ) | -87.3·10−6 cm3/mol |
| Structure | |
| Crystal structure | Rhombohedral, hr9, SpaceGroup = R-3m, No. 166 |
| Hazards | |
| GHS labelling: | |
| Pictograms |   |
| Signal word | Warning |
| Hazard statements | H302, H312, H332, H410 |
| Precautionary statements | P220, P273, P280, P501 |
| NFPA 704 (fire diamond) |  3 0 0 |
| Lethal dose or concentration (LD, LC): | |
| LD50 (median dose) | 225 mg/kg, oral (rat) |
| NIOSH (US health exposure limits): | |
| PEL (Permissible) | [1910.1027] TWA 0.005 mg/m3 (as Cd)[1] |
| REL (Recommended) | Ca[1] |
| IDLH (Immediate danger) | Ca [9 mg/m3 (as Cd)][1] |
| Related compounds | |
| Other anions | Cadmium chloride,Cadmium iodide |
| Other cations | Zinc bromide,Calcium bromide,Magnesium bromide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).  Y verify (what is Y N ?) Infobox references |
Chemical compound
Cadmium bromide is the inorganic compound with the formula CdBr2. It is a white hygroscopic solid. It also can be obtained as a mono- and tetrahydrate.[2] It has few applications.
Preparation and structure
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Cadmium bromide is prepared by heating cadmium with bromine vapor.[2] The tetrahydrate has been obtained by crystallization of the dibromide from aqueous solution. At 3.04 g/cm3, it is much less dense than the anhydrous material. According to X-ray crystallography, the tetrahydrate is a polymer of CdBr2(H2O)2 with bridging bromide ligands. There are two interstitial water molecules[3]
- ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0087". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b F. Wagenknecht; R. Juza (1963). "Cadmium bromide". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2. NY, NY: Academic Press. p. 1096.
- ^ Leligny, H.; Monier, J. C. (1978). "Structure Cristalline de CdBr2.4H2O". Acta Crystallographica Section B. 34 (1): 5–8. Bibcode:1978AcCrB..34....5L. doi:10.1107/S0567740878002186.