Cl2Hg2
472.09 g/mol
Research ReagentWarning
Calomel
CAS10112-91-1EC233-307-5
Category
Research Reagent
Compound Class
Inorganic Salt
Primary Use
Research Compound
Calomel is a mercury chloride mineral composed of mercury(I) chloride. Historically used as a medicine from the 16th to early 20th century, it frequently caused mercury poisoning in patients.
reference electrode material
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:Minamata Mercury
CAS 10112-91-1
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Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H301Toxic if swallowed
H312Harmful in contact with skin
H317May cause an allergic skin reaction
H370Causes damage to organs
H320Causes eye irritation
H341Suspected of causing genetic defects
H361Suspected of damaging fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
Regulatory Compliance2
- Minamata MercuryGlobalInternational ConventionRestricted
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Calomel (CAS 10112-91-1) is 2852.10, 3808.59.
HS code (international, 6-digit)
2852.10, 3808.59
EU CN code (8-digit)
2852 10 00, 3808 59 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
chloromercury
InChIKey
ZOMNIUBKTOKEHS-UHFFFAOYSA-L
SMILES
Cl[Hg].Cl[Hg]
Synonyms (21)
- Calogreen
- Calomel
- Calomelite (Hg2Cl2)
- Calotab
- Chlorure mercureux
- Dimercury dichloride
- Kalomel
- MERCURY(I) CHLORIDE
- Mercurius Dulcis
- Mercurous chloride (Hg2Cl2)
- Mercury chloride (Hg2Cl2)
- Mercury subchloride
- Mercury(I) chloride, p.a.
- Mild mercury chloride
- Quecksilber(I)-chlorid
- SORE THROAT WITH PALLOR
- bis(chloromercury)
- cloruro mercurioso
- dimercury(2+) chloride
- mercury(1+);dichloride