低于31.5摄氏度结晶NiSO 4 .7H 2 O, 31.5至53.3摄氏度为六水盐。103.3摄氏度失去七个结晶水。 易溶于水，水溶液呈酸性，微溶于酸、氨水主要用于电镀镍、化学镀镍、铝材着色、电池材料、催化剂等 Nickel(II) sulfate is an inorganic compound that exhibits high solubility in water. It is commonly used in electroplating, as a chemical intermediate in the preparation of other nickel salts, and as a source of nickel ions for various processes. Additionally, it has applications in the battery industry and as a catalyst in organic synthesis. Properties of NiSO4: Highly soluble in water. It can participate in redox reactions. It can form complexes with various ligands Application： Nickel(II) sulfate can be used as a precursor to synthesize: Nickel-based electrocatalysts for oxygen evolution. Ni-doped titanium dioxide nanoparticles for the photocatalytic degradation of organic pollutants such as methyl orange. Spherical silica particles coated with Ni, which find application in the field of ceramic industry and in catalysis.