calomel

Also known as mercurous chloride, Hg2Cl2, ClHgHgCl, mild mercury chloride, mercury subchloride, mercury(I) chloride

chemical compound

Chemical data

Formula: Cl2Hg2
Molecular weight: 472.09 g/mol
IUPAC name: chloromercury
SMILES: Cl[Hg].Cl[Hg]
InChIKey: ZOMNIUBKTOKEHS-UHFFFAOYSA-L
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Wikidata facts

Mass: 473.87899136
Image: Calomel-mf04b.jpg

Show 4 more facts

Commons category: Mercury(I) chloride
canonical SMILES: Cl[Hg].Cl[Hg]
chemical formula: Cl₂Hg₂
melting point: 543

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Article

Mercury(I) chloride is the chemical compound with the formula Hg2Cl2. Also known as the mineral calomel (a rare mineral) or mercurous chloride, this dense white or yellowish-white, odorless solid is the principal example of a mercury(I) compound. It is a component of reference electrodes in electrochemistry.

History