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CAS 7774-29-0

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Mercuric iodide

Description:
Mercuric iodide, also known as mercury(II) iodide, is an inorganic compound with the chemical formula HgI₂. It appears as a bright red or orange crystalline solid and is known for its high toxicity due to the presence of mercury. Mercuric iodide is insoluble in water but soluble in organic solvents such as alcohol and ether. It exhibits a tetragonal crystal structure and can exist in two polymorphic forms: the red form (α-HgI₂) and the yellow form (β-HgI₂). This compound is primarily used in various applications, including as a reagent in organic synthesis, in the preparation of other mercury compounds, and historically in medicine, although its use has declined due to safety concerns. Mercuric iodide is also notable for its role in the field of photography and as a pigment. Due to its toxicity, handling mercuric iodide requires strict safety precautions to prevent exposure and environmental contamination.
Formula:HgI2
InChI:InChI=1S/Hg.2HI/h;2*1H/q+2;;/p-2
InChI key:InChIKey=YFDLHELOZYVNJE-UHFFFAOYSA-L
SMILES:[Hg](I)I
Synonyms:
  • Alpha-Mercury(Ii)Iodide
  • Diiodomercury
  • Diiodure de mercure
  • Diioduro De Mercurio
  • Mercuric Iodide
  • Mercuric Iodide Red
  • Mercuric diiodide
  • Mercury (Ii) Biniodide, Red
  • Mercury Diiodide
  • Mercury iodide (HgI2)
  • See more synonyms
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