Product Name: Manganese
Cas No.: 7439-96-5
MF: Mn
MW: 54.94
Description: Manganese is a chemical element, designated by the symbol Mn. It has the atomic
number 25. It is found as a free element in nature (often in combination with iron), and in many
minerals. Manganese is a metal with important industrial metal alloy uses, particularly in stainless
steels.
Historically, manganese is named for various black minerals (such as pyrolusite) from the same
region of Magnesia in Greece which gave names to similar-sounding magnesium, Mg, and
magnetite, an ore of the element iron, Fe. By the mid-18th century, Swedish chemist Carl Wilhelm
Scheele had used pyrolusite to produce chlorine. Scheele and others were aware that pyrolusite
(now known to be manganese dioxide) contained a new element, but they were not able to isolate
it. Johan Gottlieb Gahn was the first to isolate an impure sample of manganese metal in 1774, by
reducing the dioxide with carbon.