Manganese Metal, chemical element, element symbol Mn, atomic number 25, is a gray white, hard, brittle and shiny transition metal. Pure metallic manganese is a slightly softer metal than iron. Manganese containing a small amount of impurities is firm and brittle, and will be oxidized in wet places. Manganese widely exists in nature. The content of manganese in soil is 0.25%. Tea, wheat and hard shell fruits contain more manganese. The operations exposed to manganese include gravel, mining, electric welding, production of dry batteries, dye industry, etc.

Chemical Composition: