nikkelikloridi

Nikkelikloridi, also known as nickel(II) chloride, has the chemical formula NiCl2. It is an inorganic compound that typically appears as a yellow crystalline solid. In its anhydrous form, it is yellow, but it readily absorbs moisture from the air to form hydrates, which are usually green. The most common hydrate is nickel(II) chloride hexahydrate, NiCl2·6H2O.

Nickel(II) chloride is soluble in water and alcohol. It is found in nature as the mineral nickelblende, although this is rare. It can be synthesized by reacting nickel metal or nickel oxides with hydrochloric acid. The compound is used in various applications, including as a catalyst in organic reactions, in electroplating baths for nickel deposition, and as a mordant in dyeing textiles. It also has some historical uses in the production of other nickel compounds and in certain battery technologies.

Due to the presence of nickel, nickel(II) chloride is considered a hazardous substance. It is a skin sensitizer and can cause allergic reactions upon contact. Inhalation of dust can irritate the respiratory tract. Proper handling procedures, including the use of personal protective equipment, are necessary when working with this compound. Its environmental impact also needs to be considered, as nickel compounds can be toxic to aquatic life.