Primarily used as a catalyst in organic synthesis, it facilitates various chemical reactions, including the formation of carbon-carbon bonds. In electroplating, it serves as a source of nickel ions to create durable and corrosion-resistant coatings on metal surfaces. It is also employed in the production of nickel-based compounds and complexes, which are utilized in industrial and research applications. Additionally, it acts as a precursor in the synthesis of pigments and dyes, contributing to vibrant and stable color formulations. In analytical chemistry, it is used as a reagent for detecting and quantifying specific substances. Its hygroscopic nature makes it suitable for use in humidity indicators and desiccants.