- Mercury(II) bromide
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Mercury(II) bromide Mercury(II) bromideOther namesMercuric bromideIdentifiers CAS number 7789-47-1 RTECS number OV7415000 Properties Molecular formula HgBr2 Molar mass 360.41 g/mol Appearance white solid Density 6.03 g/cm³, solid Melting point 236 °C
Boiling point 322 °C
Hazards EU Index 080-002-00-6 EU classification Very toxic (T+)
Dangerous for the environment (N)R-phrases R26/27/28, R33, R50/53 S-phrases (S1/2), S13, S28, S45, S60, S61 NFPA 704 Flash point Non-flammable Related compounds Other anions Mercury(II) fluoride
Mercury(II) chloride
Mercury(II) iodideOther cations Zinc bromide
Cadmium bromide
Mercury(I) bromidebromide (verify) (what is:
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)Infobox references Mercury(II) bromide or mercuric bromide is the chemical compound composed of mercury and bromine with the formula HgBr2. This white crystalline solid is a laboratory reagent. Like mercury(II) chloride, it is extremely toxic.
Reactions
Mercury(II) bromide is used as a reagent in the Koenigs–Knorr reaction, which forms glycoside linkages on carbohydrates.[1][2]
It is also used to test for the presence of arsenic, as recommended by the Pharmacopoeia.[3] The arsenic in the sample is first converted to arsine gas by treatment with hydrogen. Arsine reacts with mercury(II) bromide:[4]
The white mercury(II) bromide will turn yellow, brown, or black if arsenic is present in the sample.[5]
Mercury(II) bromide reacts violently with elemental indium at high temperatures[6] and, when exposed to potassium, can form shock-sensitive explosive mixtures.[7]
References
- ^ Horton, Derek (2004), Advances in Carbohydrate Chemistry and Biochemistry, Amsterdam: Elseveir Academic Press, pp. 76, ISBN 0120072599, http://books.google.com/?id=E22gW9CbU_0C&pg=PA76&dq=%22mercury(II)+bromide%22, retrieved 2008-05-29
- ^ Stick, Robert V. (2001), Carbohydrates: The Sweet Molecules of Life, San Diego: Academic Press, pp. 125, ISBN 0126709602, http://books.google.com/?id=-MtjsUMB6ogC&pg=PA125&dq=%22mercury(II)+bromide%22, retrieved 2008-05-29
- ^ Pederson, Ole (2006), Pharmaceutical Chemical Analysis, Boca Raton, FL: CRC Press, pp. 107, ISBN 0849319781, http://books.google.com/?id=R7ZxXS5DZj8C&pg=PT125&dq=%22mercury(II)+bromide%22, retrieved 2008-05-29
- ^ Odegaard, Nancy; Sadongei, Alyce (2005), Old Poisons, New Problems, Rowman Altamira, pp. 58, ISBN 0759105154, http://books.google.com/?id=QLU0SVlruCMC&pg=PA58&dq=%22mercury(II)+bromide%22, retrieved 2008-05-29
- ^ Townsend, Timothy G.; Solo-Gabriele, Helena (2006), Environmental Impacts of Treated Wood, Boca Raton, FL: CRC Press, pp. 339, ISBN 0849364957, http://books.google.com/?id=ENJL1UMdGTUC&pg=PT361&dq=%22mercury(II)+bromide%22, retrieved 2008-05-29
- ^ Bretherick, L.; Urben, P. G.; Pitt, Martin John (1999), Bretherick's Handbook of Reactive Chemical Hazards, Elseveir Academic Press, pp. 110, ISBN 075063605X, http://books.google.com/?id=UOxbX8q6DXsC&pg=PA1726&dq=%22mercury(II)+bromide%22, retrieved 2008-05-29
- ^ Bretherick, L.; Urben, P. G.; Pitt, Martin John (1999), Bretherick's Handbook of Reactive Chemical Hazards, Elseveir Academic Press, pp. 1276, ISBN 075063605X, http://books.google.com/?id=UOxbX8q6DXsC&pg=PA1726&dq=%22mercury(II)+bromide%22, retrieved 2008-05-29
Mercury compounds Categories:- Mercury compounds
- Bromides
- Metal halides
- Inorganic compound stubs
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