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Cadmium bromide

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Cadmium bromide
Cadmium bromide
Cadmium bromide
Names
IUPAC name Cadmium(II) bromide
Other names Cadmium dibromide
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.241 Edit this at Wikidata
EC Number
  • 232-165-1
PubChem CID
RTECS number
  • EU9935000
UNII
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2BrH.Cd/h2*1H;/q;;+2/p-2Key: KPWJBEFBFLRCLH-UHFFFAOYSA-L
  • InChI=1/2BrH.Cd/h2*1H;/q;;+2/p-2Key: KPWJBEFBFLRCLH-NUQVWONBAB
SMILES
  • BrBr
Properties
Chemical formula CdBr2
Molar mass 272.22 g/mol
Appearance white solid
Density 5.192 g/cm, 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 cm/mol
Structure
Crystal structure Rhombohedral, hr9, SpaceGroup = R-3m, No. 166
Hazards
GHS labelling:
Pictograms GHS07: Exclamation markGHS09: Environmental hazard
Signal word Warning
Hazard statements H302, H312, H332, H410
Precautionary statements P220, P273, P280, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3 0 0
Lethal dose or concentration (LD, LC):
LD50 (median dose) 225 mg/kg, oral (rat)
NIOSH (US health exposure limits):
PEL (Permissible) TWA 0.005 mg/m (as Cd)
REL (Recommended) Ca
IDLH (Immediate danger) Ca
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 , 100 kPa). checkY verify (what is  ?) 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. It has few applications.

Preparation and structure

Cadmium bromide is prepared by heating cadmium with bromine vapor. The tetrahydrate has been obtained by crystallization of the dibromide from aqueous solution. At 3.04 g/cm, 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

References

  1. ^ NIOSH Pocket Guide to Chemical Hazards. "#0087". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ 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.
  3. Leligny, H.; Monier, J. C. (1978). "Structure Cristalline de CdBr24H2O". Acta Crystallographica Section B. 34 (1): 5–8. Bibcode:1978AcCrB..34....5L. doi:10.1107/S0567740878002186.
Cadmium compounds
Cadmium(I)
Cadmium(II)
Bromine compounds
Br(−I)
Br(−I,I)
Br(I)
Br(II)
Br(I,V)
Br(III)
Br(IV)
Br(V)
Br(VII)


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