Nickel(2+) dihydroxide

Nickel(2+) dihydroxide is an inorganic chemical compound with the 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, requiring careful handling and specialized safety measures in industrial applications.

Nickel(2+) dihydroxide is a green crystalline solid that is poorly soluble in water but dissolves 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 4.1 g/cm³ and exhibits basic properties due to its hydroxide groups, making it reactive with acids to form nickel salts.

Nickel(2+) dihydroxide is primarily used in the production of nickel-cadmium batteries as a 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, ceramic production, and as a component in specialized coatings. Its applications are strictly regulated due to its hazardous classification.

Nickel(2+) dihydroxide requires strict safety measures including respiratory protection, chemical-resistant gloves, and protective clothing due to its carcinogenic and sensitizing properties. Work must be conducted in well-ventilated areas or under fume extraction systems. Avoid skin contact and inhalation of dust particles. Use appropriate containment measures to prevent environmental release and ensure all personnel are trained in hazardous material handling procedures.

Nickel(2+) dihydroxide must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizing agents. Storage areas should be equipped with appropriate containment systems and restricted access due to the compound's hazardous classification. Containers should be properly labeled and stored according to local regulations for carcinogenic substances.

Nickel(2+) dihydroxide contact requires immediate action: for skin contact, remove contaminated clothing and wash thoroughly with soap and water for at least 15 minutes. In case of eye contact, rinse immediately with plenty of water for at least 15 minutes and seek medical attention. If inhaled, move to fresh air immediately. Seek immediate medical attention for all exposures due to the compound's carcinogenic and toxic properties.

Nickel(2+) dihydroxide disposal must comply with local and national hazardous waste regulations due to its classification as a carcinogenic and environmentally hazardous substance. The material cannot be disposed of in regular waste streams and requires specialized hazardous waste treatment facilities. Contact licensed waste disposal companies and follow all regulatory requirements for documentation, packaging, and transportation of this hazardous material.

Nickel(2+) dihydroxide is classified as ADR Class 9 (miscellaneous dangerous goods), Packing Group III for transportation purposes. It requires appropriate packaging, labeling with GHS pictogrammes (GHS08, GHS07, GHS09), and proper shipping documentation. Transport must comply with ADR regulations for dangerous goods, including driver training requirements and vehicle specifications for Class 9 materials.

Nickel(2+) dihydroxide is subject to strict regulations under REACH and CLP legislation in Europe due to its classification as Carcinogenic 1A, Mutagenic 2, and Reproductive toxicant 1B. It requires safety data sheets, hazard labeling with 'Danger' signal word, and compliance with occupational exposure limits. Users must implement risk management measures and may require authorization for certain uses under REACH.

Nickel(2+) dihydroxide is available through specialized chemical distributors in Europe, including OYSI, which supplies industrial chemicals to European markets. Due to its hazardous classification, purchase requires proper documentation, safety compliance verification, and adherence to regulatory requirements. Buyers must demonstrate appropriate handling capabilities and legitimate industrial use before procurement of this restricted chemical substance.