Cobalt(2+) dichloride

Cl2Co

cobalt(2+) dichloride

CAS7646-79-9
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
Danger

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Identification

CAS Number
7646-79-9
EC Number
231-589-4
UN Number
3288
Index Number
027-004-00-5
PubChem CID
3032536

Physical-chemical properties

Molecular Formula
Cl2Co
Molar Mass
129.84 g/mol
IUPAC Name
cobalt(2+) dichloride

Chemical Identifiers

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

Overview

Cobalt(2+) dichloride (CAS 7646-79-9) is an inorganic cobalt salt with distinctive blue crystalline properties and significant industrial applications. This chemical compound, also known by its IUPAC designation cobalt(2+) dichloride, represents a critical cobalt-based material in various industrial processes. With the molecular formula Cl2Co and a molecular weight of 129.84 g/mol, this substance exhibits characteristic blue coloration in its anhydrous form and pink-red when hydrated. The compound serves as an essential source of cobalt ions in numerous technical applications where controlled cobalt delivery is required. Safety considerations are paramount when handling cobalt(2+) dichloride, as evidenced by its comprehensive hazard classification. The substance carries a "Danger" signal word and displays multiple GHS pictograms (GHS08, GHS07, GHS09), indicating serious health and environmental concerns. It is classified as a Category 1B carcinogen, reproductive toxicant, and Category 2 mutagen, alongside being a respiratory and skin sensitizer. The compound also presents significant aquatic toxicity, requiring careful environmental management during use and disposal. Primary industrial applications include catalyst preparation in chemical synthesis, pigment production for ceramics and glass, and electroplating processes. The compound finds particular utility in the manufacture of cobalt-based catalysts for petrochemical applications. Like cobalt(2+) sulfate, another important cobalt source, this dichloride serves as a precursor for various cobalt-containing materials in specialized manufacturing processes. Transportation falls under ADR Class 6.1, reflecting its toxic properties and necessitating appropriate handling protocols throughout the supply chain. OYSI provides cobalt(2+) dichloride to European industrial customers with comprehensive safety documentation and technical support.

Safety & Classification

Danger
Classification:

Carc. 1B; Muta. 2; Repr. 1B; Acute Tox. 4 *; Resp. Sens. 1; Skin Sens. 1; Aquatic Acute 1; Aquati...

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H341

Suspected of causing genetic defects.

H302

Harmful if swallowed.

H334

May cause allergy or asthma symptoms or breathing difficulties if inhaled.

H317

May cause an allergic skin reaction.

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

Harmful

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:

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 Number3288
ADR Class6.1
Packing GroupIII
Tunnel CodeE
Proper Shipping NameCobalt(II)-chlorid, wasserfrei, fest
Marine PollutantNo

Frequently Asked Questions

What is cobalt(2+) dichloride?

Cobalt(2+) dichloride is an inorganic chemical compound with the molecular formula Cl2Co and CAS number 7646-79-9. This cobalt salt has a molecular weight of 129.84 g/mol and is classified as a highly hazardous substance with multiple health risks including carcinogenicity, mutagenicity, and reproductive toxicity. It appears as crystalline solid and is widely used in industrial applications despite its significant safety concerns requiring careful handling procedures.

What are the physicochemical properties of cobalt(2+) dichloride?

Cobalt(2+) dichloride typically appears as blue or pink crystalline solid depending on its hydration state. The anhydrous form is blue while the hexahydrate form appears pink or red. It is highly soluble in water and polar solvents like ethanol. The compound is hygroscopic, meaning it readily absorbs moisture from air. It has good thermal stability under normal conditions but decomposes at high temperatures releasing toxic chlorine and cobalt-containing fumes.

What is cobalt(2+) dichloride used for?

Cobalt(2+) dichloride is primarily used as a catalyst in organic synthesis reactions, particularly in polymerization processes and hydrogenation reactions. It serves as a precursor for manufacturing other cobalt compounds and pigments. The compound is also utilized in electroplating applications, ceramic glazes, and as a drying agent in paints and inks. Additionally, it finds applications in analytical chemistry as a reagent and in the production of vitamin B12 supplements.

How to handle cobalt(2+) dichloride safely?

Cobalt(2+) dichloride requires strict safety measures due to its carcinogenic and sensitizing properties. Always wear appropriate PPE including respirator, chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume hoods to prevent inhalation. Avoid skin contact and dust generation. Use non-sparking tools and ground all equipment. Implement proper hygiene measures including hand washing and separate work clothing to prevent contamination spread.

How to store cobalt(2+) dichloride correctly?

Cobalt(2+) dichloride should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from incompatible materials. Keep containers away from heat sources, direct sunlight, and moisture due to its hygroscopic nature. Store separately from strong bases, reducing agents, and organic materials. Ensure storage areas have appropriate ventilation and emergency equipment. Use secondary containment to prevent spills and maintain proper inventory records for regulatory compliance.

What to do in case of contact with cobalt(2+) dichloride?

Immediate action is crucial upon contact with cobalt(2+) dichloride. For skin contact, remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. If inhaled, move victim to fresh air immediately and seek medical attention. For eye contact, flush thoroughly with water for 15 minutes while holding eyelids open. If ingested, do not induce vomiting and seek immediate medical help. Always consult poison control center and provide safety data sheet to medical personnel.

How to dispose of cobalt(2+) dichloride appropriately?

Cobalt(2+) dichloride disposal must comply with local and international hazardous waste regulations due to its toxic and carcinogenic properties. The substance cannot be disposed of in regular waste streams or sewage systems. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities may require neutralization and precipitation before disposal. Always consult local environmental authorities and maintain proper waste documentation for regulatory compliance and traceability.

How to transport cobalt(2+) dichloride?

Cobalt(2+) dichloride is classified under ADR Class 6.1 (Toxic substances), Packing Group III for transportation purposes. It must be packaged in UN-approved containers with proper labeling including GHS08, GHS07, and GHS09 pictograms. Transport vehicles require appropriate placarding and emergency response information. Drivers need hazardous materials training and certification. Shipping documentation must include proper shipping names, hazard classes, and emergency contact information for regulatory compliance.

Is cobalt(2+) dichloride subject to specific regulations?

Cobalt(2+) dichloride is subject to extensive regulatory oversight under REACH, CLP, and various national chemical safety regulations. It is classified with multiple hazard categories including Carcinogenic 1B, Mutagenic 2, and Reproductive toxicity 1B requiring strict handling protocols. The substance requires safety data sheets, hazard labeling, and worker exposure monitoring. Import/export may require permits and notifications. Companies must comply with occupational exposure limits and implement appropriate risk management measures.

Where to buy cobalt(2+) dichloride in Europe?

Cobalt(2+) dichloride is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. As an established chemical supplier, OYSI provides quality cobalt compounds with proper documentation, safety data sheets, and regulatory compliance support. Their experienced team can assist with technical specifications, handling requirements, and logistics coordination. Contact OYSI directly for availability, specifications, and delivery options to meet your specific industrial or research requirements.

Data Sources

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