Zinc is a bluish-white metal and a fair conductor of electricity. Zinc is used to form alloys with a variety of metals. Some of these alloys are brass, nickel silver, typewriter metal, commercial bronze, spring bronze, German silver, soft solder and aluminum solder. Zinc oxide is found in many common products, including paint, plastics, rubber products, pharmaceuticals, floor coverings, inks, cosmetics, soap, batteries and textiles.
Zinc (chemical symbol - Zn) is a bluish white lustrous metal. It is normally covered with a white coating on exposure to the atmosphere. Zinc is the fourth most common metal in use, after iron, aluminum and copper in terms of the metal’s annual production. Zinc can be recycled indefinitely, without loss of its physical or chemical properties.
It is present in a wide variety of foods, and found particularly in association with protein foods. Zinc has been concentrated to much higher levels by natural geological and geochemical processes (5-15% or 50,000-150,000 mg/kg). Such concentrations, found at the earth’s surface and underground, are being exploited as ore bodies.