Manganese peroxide
Manganese Man`ga*nese", n. [F. mangan[`e]se, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See {Magnet}, and cf. {Magnesia}.] (Chem.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty (melting point 1244[deg] C), but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic number 25; Atomic weight 54.938 [C=12.011]. [1913 Webster +PJC]

Note: An alloy of manganese with iron (called ferromanganese) is used to increase the density and hardness of steel. [1913 Webster]

{Black oxide of manganese}, {Manganese dioxide} or {Manganese peroxide}, or {Black manganese} (Chem.), a heavy black powder {MnO2}, occurring native as the mineral pyrolusite, and valuable as a strong oxidizer; -- called also familiarly {manganese}. It colors glass violet, and is used as a decolorizer to remove the green tint of impure glass. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Manganese — Man ga*nese , n. [F. mangan[ e]se, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See {Magnet}, and cf. {Magnesia}.] (Chem.) An element obtained by reduction of its oxide, as a hard,… …   The Collaborative International Dictionary of English

  • manganese — Man ga*nese , n. [F. mangan[ e]se, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See {Magnet}, and cf. {Magnesia}.] (Chem.) An element obtained by reduction of its oxide, as a hard,… …   The Collaborative International Dictionary of English

  • Manganese dioxide — Manganese Man ga*nese , n. [F. mangan[ e]se, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See {Magnet}, and cf. {Magnesia}.] (Chem.) An element obtained by reduction of its oxide, as a… …   The Collaborative International Dictionary of English

  • manganese dioxide — /mæŋgəˌniz daɪˈɒksaɪd/ (say mangguh.neez duy oksuyd) noun a heavy black powder, MnO2, occurring naturally as pyrolusite; used as a source of metallic manganese, as an oxidising agent, and as a catalyst. Also, manganese peroxide …   Australian English dictionary

  • Manganese dioxide — Manganese dioxide …   Wikipedia

  • Manganese peroxidase — Identifiers EC number 1.11.1.13 CAS number 114995 15 2 …   Wikipedia

  • Black manganese — Manganese Man ga*nese , n. [F. mangan[ e]se, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See {Magnet}, and cf. {Magnesia}.] (Chem.) An element obtained by reduction of its oxide, as a… …   The Collaborative International Dictionary of English

  • Black oxide of manganese — Manganese Man ga*nese , n. [F. mangan[ e]se, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See {Magnet}, and cf. {Magnesia}.] (Chem.) An element obtained by reduction of its oxide, as a… …   The Collaborative International Dictionary of English

  • Hydrogen peroxide — IUPAC name …   Wikipedia

  • Intoxication au manganèse — Pour les articles homonymes, voir Manganèse (homonymie). Intoxication au manganèse ou manganisme Classification et ressources externes …   Wikipédia en Français

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