Structure via PubChem · Public domain (PubChem)
calomel
Sign in to saveAlso 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 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- chemical compound
- Has part
- chlorine
- Mass
- 473.87899136
- Image
- Calomel-mf04b.jpg
Show 6 more facts
- Commons category
- Mercury(I) chloride
- crystal system
- tetragonal crystal system
- described by source
- Encyclopædia Britannica 11th edition
- canonical SMILES
- Cl[Hg].Cl[Hg]
- chemical formula
- Cl₂Hg₂
- melting point
- 543
Sources (2)
via Wikidata · CC0
~6 min read
Encyclopedic overview
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
Excerpted from Wikipedia’s “calomel” article, available under the CC BY-SA 4.0 licence.