Dichloromercury
Cl2Hg
dichloromercury
Consulting for Dichloromercury
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Identification
- CAS Number
- 7487-94-7
- EC Number
- 231-299-8
- UN Number
- 1624
- Index Number
- 080-010-00-X
- PubChem CID
- 24085
Physical-chemical properties
- Molecular Formula
- Cl2Hg
- Molar Mass
- 271.50 g/mol
- IUPAC Name
- dichloromercury
Chemical Identifiers
- InChI
- InChI=1S/2ClH.Hg/h2*1H;/q;;+2/p-2
- InChI Key
- LWJROJCJINYWOX-UHFFFAOYSA-L
Overview
Dichloromercury (CAS 7487-94-7) is an inorganic mercury compound with high toxicity and corrosive properties. Dichloromercury represents one of the most hazardous mercury-based chemical compounds used in specialized industrial applications. This inorganic salt, with the molecular formula Cl2Hg and molecular weight of 271.5 g/mol, exhibits extreme toxicity and requires stringent handling protocols due to its classification as a mutagen, reproductive toxicant, and systemic organ toxicant. The compound's dangerous nature is reflected in its GHS classification, displaying multiple hazard pictogrammes including health hazard, skull and crossbones, corrosion, and environmental danger symbols. The substance presents significant safety challenges, classified as Acute Toxicity Category 2, Skin Corrosion 1B, and carrying long-term health risks through repeated exposure (STOT RE 1). Its mutagenic and reproductive toxicity properties (Muta. 2, Repr. 2) demand comprehensive risk management measures. Additionally, dichloromercury poses severe environmental threats as both an acute and chronic aquatic hazard, requiring careful containment and disposal procedures. In industrial applications, dichloromercury serves primarily as a specialized catalyst in organic synthesis reactions and as a reagent in analytical chemistry procedures. Unlike less hazardous alternatives such as 2-chloroacetaldehyde used in pharmaceutical intermediates, dichloromercury's unique reactivity makes it irreplaceable in certain niche chemical transformations. The compound also finds limited use in electrochemical applications and specialized research contexts where its specific mercury-chlorine chemistry is required. Transportation regulations classify dichloromercury under ADR Class 6.1, emphasizing its toxic nature and requiring specialized logistics handling. OYSI maintains strict quality standards and regulatory compliance for this controlled substance, ensuring safe supply chain management for qualified industrial customers.
Safety & Classification
Muta. 2; Repr. 2; Acute Tox. 2 *; STOT RE 1; Skin Corr. 1B; Aquatic Acute 1; Aquatic Chronic 1
GHS Pictograms
Health Hazard
GHS08
Serious health hazard. May cause cancer, organ damage, or genetic defects.
Skull and Crossbones
GHS06
Acute toxicity. Fatal if swallowed, in contact with skin, or if inhaled.
Corrosion
GHS05
Corrosive. Causes severe skin burns and eye damage.
Environment
GHS09
Environmental hazard. Toxic to aquatic life with long lasting effects.
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
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
Skin Contact
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
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
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 Number | 1624 |
| ADR Class | 6.1 |
| Packing Group | II |
| Tunnel Code | D/E |
| Proper Shipping Name | Quecksilber(II)chlorid |
| Marine Pollutant | No |
Frequently Asked Questions
What is dichloromercury?
Dichloromercury is an inorganic mercury compound with the chemical formula Cl2Hg and CAS number 7487-94-7. This substance has a molecular weight of 271.5 g/mol and represents one of the mercury halides. Dichloromercury is classified as extremely hazardous due to its high toxicity, mutagenic and reproductive toxicity properties. It poses severe risks to human health and the environment, requiring strict safety measures for handling and use in industrial applications.
What are the physicochemical properties of dichloromercury?
Dichloromercury is typically found as a white crystalline solid at room temperature. As a mercury compound, it exhibits high density and specific chemical reactivity with various substances. The compound is sensitive to light and moisture, which can affect its stability. Due to its toxic nature and mercury content, dichloromercury requires careful handling and storage under controlled conditions to prevent decomposition and environmental contamination.
What is dichloromercury used for?
Dichloromercury is primarily used in specialized chemical synthesis and analytical chemistry applications where mercury compounds are required. It serves as a reagent in certain industrial processes and research laboratories for specific chemical reactions. Due to its extreme toxicity and environmental hazards, its use is highly restricted and limited to essential applications where safer alternatives are not available, typically in controlled laboratory or specialized industrial settings.
How to handle dichloromercury safely?
Dichloromercury requires maximum safety precautions due to its acute toxicity and corrosive properties. Personnel must wear full protective equipment including chemical-resistant gloves, protective clothing, safety goggles, and respiratory protection. Work must be conducted in well-ventilated areas or under fume hoods. Avoid skin contact, inhalation, and ingestion at all costs. Only trained professionals should handle this substance, and emergency procedures must be readily available.
How to store dichloromercury correctly?
Dichloromercury must be stored in tightly sealed, chemically compatible containers in a cool, dry, well-ventilated area away from incompatible materials. The storage area should be secure, clearly labeled with appropriate hazard warnings, and accessible only to authorized personnel. Secondary containment is recommended to prevent environmental contamination. Keep away from heat sources, direct sunlight, and moisture. Regular inspection of containers and storage conditions is essential for safety.
What to do in case of contact with dichloromercury?
Immediate medical attention is required for any exposure to dichloromercury. In case of skin contact, remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. If inhaled, move person to fresh air immediately. For eye contact, flush with water for at least 15 minutes. Do not induce vomiting if swallowed. Contact emergency services immediately and provide the safety data sheet to medical personnel for proper treatment guidance.
How to dispose of dichloromercury appropriately?
Dichloromercury disposal must comply with strict hazardous waste regulations due to its mercury content and extreme toxicity. The substance cannot be disposed of through normal waste streams and requires specialized hazardous waste treatment facilities. Contact licensed hazardous waste disposal companies for proper collection and treatment. All containers and contaminated materials must be handled as hazardous waste. Documentation and tracking of disposal is mandatory under environmental regulations.
How to transport dichloromercury?
Dichloromercury is classified under ADR Class 6.1 (toxic substances) Packing Group II, indicating high toxicity requiring special transport precautions. Transportation must comply with dangerous goods regulations including proper packaging, labeling with appropriate hazard pictogrammes, and documentation. Only authorized carriers with hazardous materials certification can transport this substance. Emergency response information must accompany shipments, and specific routing restrictions may apply depending on local regulations.
Is dichloromercury subject to particular regulations?
Dichloromercury is subject to extensive regulatory oversight under REACH, CLP, and mercury-specific legislation in Europe. Its classification as Muta. 2, Repr. 2, Acute Tox. 2, STOT RE 1, and aquatic toxicity categories triggers strict handling, reporting, and authorization requirements. Use restrictions apply under various environmental and occupational health regulations. Companies must maintain detailed records, implement risk management measures, and may require special permits for possession and use.
Where to buy dichloromercury in Europe?
Dichloromercury is available through specialized chemical distributors like OYSI, which serves the European market with technical-grade chemicals. Due to its hazardous classification and regulatory restrictions, purchase requires verification of legitimate use, appropriate safety measures, and compliance with applicable regulations. Buyers must demonstrate proper handling capabilities and may need special authorization. Contact OYSI's technical team for availability, regulatory compliance support, and safe delivery arrangements across Europe.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.