Chloromercury

Cl2Hg2

chloromercury

CAS10112-91-1
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
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Identification

CAS Number
10112-91-1
EC Number
233-307-5
UN Number
2025
Index Number
080-003-00-1
PubChem CID
24956

Physical-chemical properties

Molecular Formula
Cl2Hg2
Molar Mass
472.09 g/mol
IUPAC Name
chloromercury

Chemical Identifiers

InChI
InChI=1S/2ClH.2Hg/h2*1H;;/q;;2*+1/p-2
InChI Key
ZOMNIUBKTOKEHS-UHFFFAOYSA-L

Overview

Chloromercury (CAS 10112-91-1) is an inorganic mercury compound with significant toxicological properties and environmental hazard classification. This mercury-based chemical compound, also known by its IUPAC designation chloromercury, represents a class of organometallic substances that require specialized handling protocols due to their inherent toxicity and environmental persistence. With a molecular formula of Cl2Hg2 and molecular weight of 472.09 g/mol, chloromercury exhibits the characteristic properties of mercury halides, including high density and distinctive chemical reactivity patterns. The compound is classified under multiple hazard categories, including Acute Toxicity Category 4, Specific Target Organ Toxicity Single Exposure Category 3, and both Skin and Eye Irritation Category 2. Its environmental impact classification as Aquatic Acute 1 and Aquatic Chronic 1 reflects the compound's significant bioaccumulation potential and persistence in aquatic ecosystems. The ADR Class 6.1 designation indicates its status as a toxic substance requiring specialized transportation protocols. Safety considerations are paramount when handling chloromercury, as mercury compounds can cause systemic toxicity affecting the nervous system, kidneys, and other organ systems. Unlike simpler halogenated compounds such as 1,2-dichlorobenzene, mercury-containing substances require enhanced protective equipment and specialized waste disposal procedures. Industrial applications typically include specialized analytical chemistry procedures, certain electrochemical processes, and as intermediate compounds in specific synthetic pathways. The compound may also find use in specialized research applications where mercury's unique properties are essential. OYSI maintains availability of chloromercury for qualified industrial customers with appropriate handling capabilities and regulatory compliance.

Safety & Classification

Warning
Classification:

Acute Tox. 4 *; STOT SE 3; Skin Irrit. 2; Eye Irrit. 2; Aquatic Acute 1; Aquatic Chronic 1

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H302

Harmful if swallowed.

H335

May cause respiratory irritation.

H315

Causes skin irritation.

H319

Causes serious eye irritation.

H400

Very toxic to aquatic life.

H410

Very toxic to aquatic life with long lasting effects.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Inhalation

Irritant

Measures if vapours or dust are inhaled

First Aid Actions

  • +P304IF INHALED:
  • +P340Remove person to fresh air and keep comfortable for breathing.
  • +P311Call a POISON CENTER/doctor.

Related hazard statements:

Skin Contact

Irritant

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Irritant

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

Ingestion

Harmful

Measures if substance is accidentally swallowed

First Aid Actions

  • +P301IF SWALLOWED:
  • +P330Rinse mouth.
  • +P331Do NOT induce vomiting.
  • +P310Immediately call a POISON CENTER/doctor.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number2025
ADR Class6.1
Packing GroupIII
Tunnel CodeE
Proper Shipping NameQuecksilber(I)-chlorid
Marine PollutantNo

Frequently Asked Questions

What is chloromercury?

Chloromercury is an inorganic mercury compound with the chemical formula Cl2Hg2 and CAS number 10112-91-1. This substance has a molecular weight of 472.09 g/mol and belongs to the family of mercury halides. It is classified as a hazardous chemical with acute toxicity properties, skin and eye irritation potential, and environmental toxicity. The compound requires careful handling due to its mercury content and associated health risks.

What are the physicochemical properties of chloromercury?

Chloromercury is a mercury-containing inorganic compound that typically appears as a solid at room temperature. As a mercury halide with the formula Cl2Hg2, it exhibits characteristic properties of heavy metal compounds including high density and stability under normal conditions. The compound's molecular structure consists of mercury atoms bonded to chlorine atoms, forming a compound with significant toxicological properties requiring specialized handling procedures.

What is chloromercury used for?

Chloromercury is primarily used in specialized industrial applications and research settings where mercury compounds are required. Its applications may include use as a chemical intermediate in synthesis processes, analytical chemistry procedures, and specialized manufacturing processes. Due to its hazardous nature and environmental impact, its use is typically restricted to professional settings with appropriate safety controls and regulatory compliance measures in place.

How to handle chloromercury safely?

Chloromercury requires careful handling with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. Work should be conducted in well-ventilated areas or under fume hoods to minimize inhalation exposure. Given its acute toxicity classification (Acute Tox. 4) and irritant properties, handlers must follow strict safety protocols and ensure proper training before use.

How to store chloromercury correctly?

Chloromercury should be stored in tightly sealed, chemically compatible containers in a cool, dry, and well-ventilated area away from incompatible materials. Storage areas must be secure and accessible only to trained personnel due to the compound's toxicity and environmental hazard classification. Containers should be properly labeled according to GHS requirements with appropriate warning pictogrammes (GHS07, GHS09) and stored away from water sources to prevent environmental contamination.

What to do in case of contact with chloromercury?

In case of skin contact with chloromercury, immediately remove contaminated clothing and rinse the affected area thoroughly with plenty of water for at least 15 minutes. For eye contact, flush eyes immediately with clean water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. Seek immediate medical attention in all cases of exposure and provide the safety data sheet to medical personnel.

How to dispose of chloromercury appropriately?

Chloromercury must be disposed of as hazardous waste through licensed waste management companies specialized in handling mercury-containing compounds. Due to its environmental toxicity classification (Aquatic Acute 1, Aquatic Chronic 1), it cannot be disposed of in regular waste streams or released into the environment. Disposal must comply with local and European regulations regarding mercury waste, including proper documentation and tracking throughout the disposal process.

How to transport chloromercury?

Chloromercury is classified under ADR transport regulations as Class 6.1 (Toxic substances), Packing Group III. Transportation requires appropriate UN-approved packaging and proper documentation including transport documents and emergency response information. Vehicles must display appropriate hazard placards, and drivers must be trained in hazardous materials transport. The shipment must comply with all applicable transport regulations for toxic substances containing mercury.

Is chloromercury subject to specific regulations?

Chloromercury is subject to strict European regulations under REACH and CLP classifications, requiring safety data sheets and hazard labeling with Warning signal word and specific pictogrammes (GHS07, GHS09). While not currently listed as an SVHC substance, it falls under mercury-related restrictions and monitoring requirements. Users must comply with occupational exposure limits, environmental protection measures, and waste disposal regulations specific to mercury compounds.

Where to buy chloromercury in Europe?

Chloromercury is available through OYSI, a European distributor of specialty chemicals, serving customers across the European market. As a regulated mercury compound, purchases typically require documentation of legitimate use and compliance with applicable regulations. OYSI provides proper packaging, documentation, and technical support for handling this hazardous material. Contact OYSI directly for availability, regulatory requirements, and technical specifications for your specific application needs.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.