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Mercury(II) bromide

The magnitude of this product does not match with the 22 grams/100 ml at the solubility entry. -- | NFPA-H = 3 | NFPA-F = 0 | NFPA-R = 2 | NFPA-S = Mercury(II) chloride Mercury(II) iodide Cadmium bromide Mercury(I) bromide

Mercury(II) bromide or mercuric bromide is an inorganic compound with the formula HgBr2. This white solid is a laboratory reagent. Like all mercury salts, it is highly toxic.

Preparation

Mercury(II) bromide can be produced by reaction of metallic mercury with bromine.

Reactions

Mercury(II) bromide is used as a reagent in the Koenigs–Knorr reaction, which forms glycoside linkages on carbohydrates. | access-date = 2008-05-29 | access-date = 2008-05-29

It is also used to test for the presence of arsenic, as recommended by the European Pharmacopoeia. | access-date = 2008-05-29 The arsenic in the sample is first converted to arsine gas by treatment with hydrogen. Arsine reacts with mercury(II) bromide: | access-date = 2008-05-29

:AsH3 + 3HgBr2 → As(HgBr)3 + 3HBr

The white mercury(II) bromide will turn yellow, brown, or black if arsenic is present in the sample. | access-date = 2008-05-29

Mercury(II) bromide reacts violently with elemental indium at high temperatures and, when exposed to potassium, can form shock-sensitive explosive mixtures.

References

References

  1. (June 18, 2018). "CRC Handbook of Chemistry and Physics". CRC Press.
  2. "Mercuric bromide".
  3. PubChem. "Mercury bromide (Hg2Br2)".
  4. Elements, American. "Mercury Bromide".
  5. (1963). "Handbook of Preparative Inorganic Chemistry, 2nd Ed.". Academic Press.
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mercury(ii)-compounds bromides metal-halides
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