Nickel(2+) dihydroxide

Nickel(2+) dihydroxide is an inorganic compound with the chemical formula H2NiO2 and CAS number 12054-48-7. This nickel salt has a molecular weight of 92.708 g/mol and appears as a green crystalline solid. It is classified as a highly hazardous substance with carcinogenic, mutagenic, and reproductive toxicity properties. The compound requires careful handling due to its significant health risks and environmental concerns.

Nickel(2+) dihydroxide is a green crystalline solid that is poorly soluble in water but soluble in acids and ammonia solutions. The compound is stable under normal conditions but decomposes upon heating to form nickel oxide. It has a density of approximately 4.15 g/cm³ and exhibits basic properties due to the hydroxide groups in its structure.

Nickel(2+) dihydroxide is primarily used in the production of nickel-cadmium batteries as an active cathode material. It serves as a precursor for manufacturing other nickel compounds and catalysts in chemical processes. The compound is also utilized in electroplating applications and as a component in certain specialized coatings and ceramic formulations in industrial settings.

Nickel(2+) dihydroxide requires strict safety measures including respiratory protection, chemical-resistant gloves, and protective clothing due to its carcinogenic and sensitizing properties. Work should be conducted in well-ventilated areas or under fume extraction. Avoid skin contact and inhalation of dust particles. Emergency eyewash stations and safety showers must be readily accessible when handling this dangerous substance.

Nickel(2+) dihydroxide should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from incompatible materials. Keep containers away from heat sources and direct sunlight. Store separately from acids, oxidizing agents, and food products. Ensure proper labeling with hazard warnings and maintain an inventory of quantities due to its hazardous classification.

In case of skin contact with nickel(2+) dihydroxide, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. If inhaled, move to fresh air immediately and seek medical attention. For eye contact, rinse with plenty of water for at least 15 minutes and remove contact lenses if present. Seek immediate medical attention in all cases of exposure.

Nickel(2+) dihydroxide must be disposed of as hazardous waste according to local and national regulations. The compound cannot be disposed of in regular waste streams due to its toxic and carcinogenic properties. Contact authorized waste disposal companies for proper collection and treatment. Small quantities should be neutralized and treated by qualified professionals before final disposal in approved hazardous waste facilities.

Nickel(2+) dihydroxide is classified as ADR Class 9 (miscellaneous dangerous goods), Packing Group III for transportation purposes. It requires appropriate hazardous goods packaging, labeling, and documentation during transport. Vehicles must carry proper safety equipment and emergency response information. Only trained personnel should handle the transportation, following all relevant dangerous goods regulations for road, rail, or sea transport.

Nickel(2+) dihydroxide is subject to strict regulations under REACH and CLP due to its classification as carcinogenic (1A), mutagenic (2), and reprotoxic (1B). It requires safety data sheets, exposure scenarios, and risk assessments. The compound may be subject to authorization requirements and workplace exposure limits. Users must comply with occupational health regulations and environmental protection measures when handling this substance.

Nickel(2+) dihydroxide is available through OYSI, a European distributor of technical chemicals specializing in hazardous substances. As an authorized supplier, OYSI provides proper documentation, safety data sheets, and regulatory compliance support. Due to the compound's hazardous nature, purchases require proper authorization and adherence to safety regulations. Contact OYSI directly for availability, technical specifications, and delivery arrangements across Europe.