Manganese

CAS ID#: 7439-96-5

Affected Organ Systems: Developmental (effects while organs are developing), Neurological (Nervous System), Reproductive (Producing Children), Respiratory (From the Nose to the Lungs)

Cancer Classification:  Please contact NTP, IARC, or EPA with questions on cancer and cancer classification.

Chemical Classification: Inorganic substances

Summary: Manganese is a naturally occurring metal that is found in many types of rocks. Pure manganese is silver-colored, but does not occur naturally. It combines with other substances such as oxygen, sulfur, or chlorine. Manganese can also be combined with carbon to make organic manganese compounds. Common organic manganese compounds include pesticides, such as maneb or mancozeb, and methylcyclopentadienyl manganese tricarbonyl (MMT), a fuel additive in some gasolines. Manganese is an essential trace element and is necessary for good health. Manganese can be found in several food items, including grains and cereals, and is found in high amounts in other foods, such as tea.

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Page last reviewed: February 10, 2021
Content source: Agency for Toxic Substances and Disease Registry