Mercury(II) bromide
Mercury(II) bromide or mercuric bromide is an inorganic compound with the formula HgBr2.[2] This white solid is a laboratory reagent.[3] [2] Like all mercury salts, it is highly toxic.[2]
Preparation
[edit ]Mercury(II) bromide can be produced by reaction of metallic mercury with bromine.[4]
Reactions
[edit ]Mercury(II) bromide is used as a reagent in the Koenigs–Knorr reaction, which forms glycoside linkages on carbohydrates.[5] [6]
It is also used to test for the presence of arsenic, as recommended by the European Pharmacopoeia .[7] The arsenic in the sample is first converted to arsine gas by treatment with hydrogen. Arsine reacts with mercury(II) bromide:[8]
The white mercury(II) bromide will turn yellow, brown, or black if arsenic is present in the sample.[9]
Mercury(II) bromide reacts violently with elemental indium at high temperatures[10] and, when exposed to potassium, can form shock-sensitive explosive mixtures.[11]
References
[edit ]- ^ "Mercuric bromide". PubChem . National Center for Biotechnology Information . Retrieved 2021年11月25日.
- ^ a b c PubChem. "Mercury bromide (Hg2Br2)". pubchem.ncbi.nlm.nih.gov. Retrieved 2022年12月22日.
- ^ Elements, American. "Mercury Bromide". American Elements. Retrieved 2022年12月22日.
- ^ F. Wagenknecht; R. Juza (1963). "Mercury(II) bromide". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2. NY, NY: Academic Press. p. 1109.
- ^ Horton, Derek (2004), Advances in Carbohydrate Chemistry and Biochemistry, Amsterdam: Elsevier Academic Press, p. 76, ISBN 0-12-007259-9 , retrieved 2008年05月29日
- ^ Stick, Robert V. (2001), Carbohydrates: The Sweet Molecules of Life, San Diego: Academic Press, p. 125, ISBN 0-12-670960-2 , retrieved 2008年05月29日
- ^ Pederson, Ole (2006), Pharmaceutical Chemical Analysis, Boca Raton, Florida: CRC Press, p. 107, ISBN 0-8493-1978-1 , retrieved 2008年05月29日
- ^ Odegaard, Nancy; Sadongei, Alyce (2005), Old Poisons, New Problems, Rowman Altamira, p. 58, ISBN 0-7591-0515-4 , retrieved 2008年05月29日
- ^ Townsend, Timothy G.; Solo-Gabriele, Helena (2006), Environmental Impacts of Treated Wood, Boca Raton, Florida: CRC Press, p. 339, ISBN 0-8493-6495-7 , retrieved 2008年05月29日
- ^ Bretherick, L.; Urben, P. G.; Pitt, Martin John (1999), Bretherick's Handbook of Reactive Chemical Hazards , Elsevier Academic Press, p. 110, ISBN 0-7506-3605-X
- ^ Bretherick, L.; Urben, P. G.; Pitt, Martin John (1999), Bretherick's Handbook of Reactive Chemical Hazards , Elsevier Academic Press, p. 1276, ISBN 0-7506-3605-X