Skin diseases caused by nickel and its compounds

1. Industrial applications Common nickel industries are mining, smelting, electroplating, chemical engineering, petroleum refining, dyes, and coin manufacturing. Pure nickel (99.4%) is used for electroplating. Nickel alloys are used in the manufacture of instruments and machine parts. Nickel powder is used as a catalyst. Nickel is also used in the manufacture of alkaline storage batteries, enamels, etc. The nickel compounds often contacted in the industry are nickel monoxide (NiO), nickel oxide (Ni2O3), nickel hydroxide [Ni (OH) 2], sulfuric acid Nickel (NiSO4middot; 7H2O), nickel chloride (NiCl2), and nickel nitrate [Ni (NO3) 2middot; 6H2O], etc., in the gaseous state is nickel carbonyl [Ni (CO) 4]. 2. Physical and chemical properties Nickel is a silver-white hard metal, mainly derived from sulfide ores and nickel arsenic. In inorganic compounds of nickel, oxides and hydroxides are insoluble or slightly soluble in water, and their salts are easily soluble in water.