Manganese dioxide, in the form of umber, was one of the earliest natural substances used by human ancestors It was used as a pigment at least from the middle
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Simple preparation of active manganese dioxide from activated carbon Louis A Carpino J Org Chem , 1970, 35 (11), pp 39713972 DOI: 10 1021 jo00836a091
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Journal of Power Sources, 51 (1994) 319330 319 Chemically activated manganese dioxide for dry batteries M Askar and H Abbas Laboratory of Physical Chemistry
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Manganese dioxide | MnO2 | CID 14801 structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety