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 dangerous substance with multiple hazard categories including carcinogenic (1B), mutagenic (2), reproductive toxicity (1B), and respiratory/skin sensitization properties. It appears as crystalline material and is widely used in various industrial applications requiring cobalt compounds.

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

Cobalt(2+) dichloride serves multiple industrial purposes including catalyst preparation for chemical synthesis, electroplating applications for corrosion-resistant coatings, and pigment manufacturing. It is used in the production of other cobalt compounds, battery manufacturing, ceramic glazes, and as a drying agent in paints and varnishes. The compound also finds applications in analytical chemistry as a reagent and in the synthesis of coordination complexes for research purposes.

Cobalt(2+) dichloride requires strict safety measures due to its carcinogenic and sensitizing properties. Essential PPE includes respiratory protection (P2/P3 filter), chemical-resistant gloves (nitrile or neoprene), safety goggles, and protective clothing. Work in well-ventilated areas or under fume extraction. Avoid dust generation and skin contact. Use proper handling techniques to prevent inhalation or ingestion. Regular health monitoring is recommended for workers with occupational exposure to this substance.

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, oxidizing agents, and reducing agents. Ensure storage areas have appropriate spill containment measures and restricted access. Use appropriate labeling with GHS pictograms (GHS08, GHS07, GHS09) and maintain proper inventory records.

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 to fresh air immediately and seek medical attention. For eye contact, flush with water for 15-20 minutes and remove contact lenses if present. If ingested, do not induce vomiting and seek immediate medical care. Always consult a physician and provide safety data sheet information.

Cobalt(2+) dichloride disposal must comply with local and European waste regulations as hazardous waste. The substance cannot be disposed of in regular waste streams due to its toxic and carcinogenic properties. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities should be collected in appropriate containers and labeled clearly. Consider recovery or recycling options where available, as cobalt compounds have economic value and environmental importance.

Cobalt(2+) dichloride is classified under ADR class 6.1 (toxic substances) packing group III for transport purposes. It requires appropriate UN packaging specifications and hazard labeling during transportation. Packages must bear proper shipping names, UN numbers, and hazard labels. Transport vehicles need appropriate documentation including transport documents and emergency response information. Drivers require ADR certification for dangerous goods transport, and emergency equipment must be available during transit.

Cobalt(2+) dichloride is subject to extensive European regulations including REACH registration requirements and CLP classification as Carc. 1B, Muta. 2, and Repr. 1B. While not currently listed as SVHC, it may face future restrictions due to its hazardous properties. Industrial users must implement risk management measures, worker health surveillance, and proper exposure controls. The substance requires safety data sheets, appropriate labeling with danger signal word, and compliance with occupational exposure limits where established.

Cobalt(2+) dichloride is available through OYSI, a specialized European distributor of technical chemicals. As an established chemical supplier, OYSI provides this substance to industrial customers with proper documentation, safety data sheets, and regulatory compliance support. Professional buyers can contact OYSI directly for availability, specifications, and technical support. Due to the hazardous nature of this substance, purchases are typically restricted to qualified industrial users with appropriate handling capabilities and regulatory compliance.