Mercury(I) bromide
Chemical compound / From Wikipedia, the free encyclopedia
Mercury(I) bromide or mercurous bromide is the chemical compound composed of mercury and bromine with the formula Hg2Br2. It changes color from white to yellow when heated[1] and fluoresces a salmon color when exposed to ultraviolet light. It has applications in acousto-optical devices.[4]
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC name
Dimercury dibromide | |||
Other names
Mercury(I) bromide Mercurous bromide | |||
Identifiers | |||
3D model (JSmol) |
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ChemSpider | |||
ECHA InfoCard | 100.150.337 | ||
EC Number |
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PubChem CID |
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UNII | |||
UN number | 1634 | ||
CompTox Dashboard (EPA) |
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Properties | |||
Hg2Br2 | |||
Molar mass | 560.99 g/mol | ||
Appearance | white to yellow tetragonal crystals | ||
Odor | odorless | ||
Density | 7.307 g/cm3, solid | ||
Melting point | 405 °C (761 °F; 678 K) | ||
Boiling point | ~ 390 °C (734 °F; 663 K) sublimes[1] | ||
3.9 x 10−5 g/100 mL | |||
Solubility product (Ksp) |
6.4×10−23[2] | ||
Solubility | insoluble in ether, acetone, alcohol | ||
−28.6·10−6 cm3/mol | |||
Structure | |||
linear | |||
Hazards[3] | |||
GHS labelling: | |||
Danger | |||
H300, H310, H330, H373, H410 | |||
P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P314, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501 | |||
Flash point | non-flammable | ||
Related compounds | |||
Other anions |
Mercury(I) fluoride Mercury(I) chloride Mercury(I) iodide | ||
Other cations |
Zinc bromide Cadmium bromide | ||
Related compounds |
Mercury(II) bromide | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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A very rare mineral form is called kuzminite and has the chemical formula Hg2(Br,Cl)2.