Mangandioxid

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H373：Kann die Organe schädigen bei längerer oder wiederholter Exposition.

• Sicherheit

  P260：Dampf/Aerosol/Nebel nicht einatmen.

  P264：Nach Gebrauch gründlich waschen.

  P264：Nach Gebrauch gründlich waschen.

  P270：Bei Gebrauch nicht essen, trinken oder rauchen.

  P301+P312：BEI VERSCHLUCKEN: Bei Unwohlsein GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.

  P314：Bei Unwohlsein ärztlichen Rat einholen / ärztliche Hilfe hinzuziehen.

Manganese dioxide Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  SCHWARZES BIS BRAUNES PULVER

• CHEMISCHE GEFAHREN

  Zersetzung beim Erhitzen über 553°C unter Bildung von Mangan(III)-oxid und Sauerstoff. Erhöhte Feuergefahr. Starkes Oxidationsmittel. Reagiert heftig mit brennbaren und reduzierenden Stoffen. Feuer- und Explosionsgefahr. Reagiert heftig mit Aluminium beim Erhitzen.

• ARBEITSPLATZGRENZWERTE

  TLV: (als Mn) 0.2 mg/m?(als TWA); (ACGIH 2006).
  MAK: als Mn (Einatembare Fraktion) 0.5 mg/m? Schwangerschaft: Gruppe C; (DFG 2005).
  

• AUFNAHMEWEGE

  Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.

• INHALATIONSGEFAHREN

  Verdampfung bei 20°C vernachlässigbar; eine gesundheitsschädliche Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden.

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Das Aerosol reizt die Atemwege.

• WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

  Möglich sind Auswirkungen auf Lunge und das Zentralnervensystem mit nachfolgender erhöhter Anfälligkeit auf Bronchitis, Pneumonitis und neurologische, neuropsychiatrische Störungen (Manganismus). Tierversuche zeigen, dass die Substanz möglicherweise fruchtbarkeitsschädigend oder entwicklungsschädigend wirken kann.

• LECKAGE

  Persönliche Schutzausrüstung: Atemschutzgerät, P2-Filter für schädliche Partikel. Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. NICHT mit Sägemehl oder anderen brennbaren Absorptionsmitteln binden. NICHT in die Umwelt gelangen lassen.

• R-Sätze Betriebsanweisung:

  R20/22:Gesundheitsschädlich beim Einatmen und Verschlucken.

• S-Sätze Betriebsanweisung:

  S25:Berührung mit den Augen vermeiden.

• Aussehen Eigenschaften

  MnO2, Braunstein, Mangandioxid, Mangansuperoxid, Purolysit.

• Gefahren für Mensch und Umwelt

  Brandfördernd. Feuergefahr bei Berührung mit brennbaren Stoffen. Zu vermeidende Stoffe: Starke Reduktionsmittel, Säuren, organische Materialien.
  
  Gesundheitsschädlich beim Einatmen, Verschlucken und bei Berührung mit der Haut. Reizt die Augen, Atmungsorgane und die Haut.

• Schutzmaßnahmen und Verhaltensregeln

  Arbeiten nur im Abzug durchführen. Substanz nicht einatmen. Jeglichen Kontakt vermeiden.
  Schutzbrille mit Seitenschutz und oberer Augenraumabdeckung
  Neopren-Schutzhandschuhe als kurzzeitiger Spritz- und Staubschutz.

• Verhalten im Gefahrfall

  Festsubstanz mechanisch aufnehmen, Flüssigkeit und Lösung mit flüssigkeitsbindendem Material (Sand, Kieselgur, Säurebinder, Universalbinder, Sägemehl) aufnehmen und als Abfall entsorgen. Für ausreichend Lüftung sorgen.
  Wassersprühstrahl, Kohlendioxid, Trockenlöschmittel oder geeigneter Schaum.

• Erste Hilfe

  Nach Hautkontakt: Nach Berührung sofort mit Seife und viel Wasser abwaschen.
  Nach Augenkontakt: 15 Minuten bei gespreizten Lidern unter fließendem Wasser mit Augendusche ausspülen. Augenarzt konsultieren!
  Nach Einatmen: Frischluft, ggf. Atemspende od. Gerätebeatmung.
  Nach Verschlucken: Viel Wasser Trinken lassen, Erbrechen auslösen, Arzt verständigen.
  Nach Kleidungskontakt: Verunreinigte Kleidung sofort ausziehen, ggf. auch die Unterwäsche.
  Bei Unfall oder Unwohlsein sofort Arzt hinzuziehen.
  Ersthelfer: siehe gesonderten Anschlag

• Sachgerechte Entsorgung

  Falls Recycling nicht möglich, darf die Substanz nicht mit Hausmüll entsorgt werden. Substanz darf nicht in die Kanalisation gelangen. Reste zur Sonderabfallverbrennung geben. Auskunft: Hr. Riepl, Tel.: 8884711 oder Hr. Uhl, Tel.: 2015557.

• Beschreibung

  Manganese dioxide is a black crystalline solid. Molecular weight= 86.94; Freezing/Melting point=(decomposes)=53℃. Hazard Identification (based on NFPA-704 M Rating System): Health 3, Flammability 0, Reactivity×(Oxidizer). Insoluble in water.

• Chemische Eigenschaften

  Manganese dioxide is a black crystalline solid or powder.

• Physikalische Eigenschaften

  Black tetragonal crystals; density 5.08 g/cm3; Moh’s hardness 6.3; decomposes at 535°C; insoluble in water.

• Verwenden

  As an oxidizing agent, source of metallic manganese, decolorizing glass, painting porcelain, as an analytical reagentManganese(IV) oxide is used as an oxidizing agent in organic synthesis such as oxidation of allylic/benzylic alcohols, as a textile dye, as a reducing agent, and as a component of dry cell batteries such as zinc-carbon battery and alkaline battery. It is also used in making pigments for glasses and ceramics, and drier for paints. Further it is used in the manufacture of manganese steel and several manganese derivatives including potassium permanganate, a powerful versatile oxidant. Catalytic hydration of nitriles to amides by flowing through manganese dioxide has been reported. Manganese dioxide supported on inorganic oxide can be used for oxidation of methylamine through CWAO (Catalytic Wet Air Oxidation). It has high potential as highly efficient and robust material for water oxidation reaction (WORs).

• Verwenden

  Manganese(IV) oxide is the most important ore of manganese from which the metal is mostly manufactured. The oxide occurs in nature as the mineral pyrolusite as heavy gray lumps, or black when powdered.
  The mineral is used to produce manganese metal, most manganese salts, and also manganese steel and other alloys. The metallurgical applications of manganese(IV) oxide mainly involve making ferromanganese and special manganese alloys. Another important application of manganese(IV) oxide is in manufacturing dry-cell batteries and alkaline cells. The oxide also is a colorant in brick, tile, porcelain and glass; a drier for paints and varnishes; a 552 MANGANESE(IV) OXIDEpreparation for printing and dyeing textiles; a curing agent for polysulfide rubbers; an adsorbent for hydrogen sulfide and sulfur dioxide; an oxidizing agent in many organic syntheses such as quinone and hydroquinone; and a catalyst in laboratory preparation of oxygen from potassium chlorate. Manganese(IV) oxide also is used to make welding rods and fluxes, and ceramic magnets (ferrites); and is an additive to fertilizers.

• Verwenden

  The mineral is the source of manganese and all its Compounds; largely used in manufacture of manganese steel; oxidizer; in alkaline batteries (dry cells); for making amethyst glass, decolorizing glass; painting on porcelain, faience and majolica. The ppt is used in electrotechnics, pigments, browning gun barrels, drier for paints and varnishes, printing and dyeing textiles.

• synthetische

  Pure manganese(IV) oxide (precipitate form) may be prepared by reducing permanganate ion with a manganous salt:
  2KMnO4 + 3MnSO4 + 2H2O → 5MnO2 + K2SO4 + 2H2SO4
  Manganese(IV) oxide can also be precipitated by oxidation of a manganese(II) salt using an oxidizing agent such as hypochlorite or peroxydisulphate:
  Mn2+ + S2O82– + 2H2O → MnO2 + 2SO42– + 4H+
  Manganese(IV) oxide may also be made by thermal decomposition of manganese(II) nitrate; or from roasting manganese(II) carbonate in air: Mn(NO3)2 → MnO2 + 2NO2
  MnCO3 + ½ O2 → MnO2 + CO2
  A highly active gamma-MnO2 can be produced by treating manganese(III) oxide with hot sulfuric acid:
  Mn2O3 + H2SO4 → MnO2 + MnSO4 + H2O
  Mn2O3 is derived from pyrolusite by heating the mineral at 600–800°C or reducing with powdered coal at 300°C.

• Allgemeine Beschreibung

  Manganese(IV) oxide (MnO₂) is an eco-friendly chemical having a high theoretical specific capacitance.

• Reaktivität anzeigen

  The stability of manganese dioxide is due primarily to its insolubility. It is, however, readily attacked by reducing agents in acid solution, for example oxidizing concentrated hydrochloric acid to chlorine. In hot concentrated alkali it dissolves to give a purple solution which contains an equimolar mixture of trivalent manganese, probably as (Mn(OH)6)3- and manganate(V), (MnO4)3-. Manganese dioxide is also one of the most active catalysts for the oxidation of carbon monoxide near room temperature.

• Hazard

  Oxidizing agent, may ignite organic materials.

• Flammability and Explosibility

  Non flammable

• reaction suitability

  reagent type: oxidant

• Industrielle Verwendung

  Manganese dioxide (MnO₂) is soluble in water and HNO₃ and soluble in HCl. It occurs in nature as the blue-black mineral pyrolusite. In glass, manganese dioxide is used as a colorant and decolorizer.
  The major use of manganese oxides is an ore of manganese for the manufacturing of steel; manganese serves to increase the hardness and decrease the brittleness of steel. Another important use of manganese oxides is as the cathode material of common zinc/carbon and alkaline batteries (such as flashlight batteries).

• Sicherheitsprofil

  Poison by intravenous and intratracheal routes. Moderately toxic by subcutaneous route. Experimental reproductive effects. A powerful oxidizer. Flammable by chemical reaction. It must not be heated or rubbed in contact with easily oxilzable matter. Violent thermite reaction when heated with aluminum. Potentially explosive reaction with hydrogen peroxide, peroxomonosulfuric acid, chlorates + heat, anilinium perchlorate. Ignition on contact with hydrogen sulfide. Violent reaction with oxidizers, potassium azide (when warmed), diboron tetrafluoride, Incandescent reaction with calcium hydride, chlorine trifluoride, rubidium acetylide (at 350℃). Vigorous reaction with hydroxylaminium chloride. Incompatible with H202, H2SO j, Naz02. Keep away from heat and flammable materials. See also MANGANESE COMPOUNDS.

• mögliche Exposition

  Manganese dioxide is used as depolarizer for dry cell batteries, for production of manganese metal; as an oxidizing agent; laboratory reagent; and in making pyrotechnics and matches; in dry cell batteries.

• Erste Hilfe

  If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if Manganese dioxide 1665 heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.

• Lager

  Color Code—Yellow: Reactive Hazard (strong oxidizer); Store in a location separate from other materials, especially flammables and combustibles. Prior to working with this chemical you should be trained on its proper handling and storage. Manganese dioxide must be stored to avoid contact with heat and flammable materials and oxidizers (such as perchlorates, peroxides, permanganates, chlorates, and nitrates), since violent reactions occur. See also incompatibilities above. See OSHA Standard 1910.104 and NFPA 43A Code for the Storage of Liquid and Solid Oxidizers for detailed handling and storage regulations.

• Versand/Shipping

  UN1479 Oxidizing solid, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, Technical Name Required. UN3137 (powder) Oxidizing solid, flammable, Hazard Class: 5.1; Labels: 5.1-Oxidizer, 4.1 Flammable solid, Technical Name Required.

• Inkompatibilitäten

  A powerful oxidizer. Incompatible with strong acids; reducing agents; combustible materials (such as fuel and clothing; organic materials. Mixtures with calcium hydride is a heat- and friction-sensitive explosive. Vigorous reaction with hydrogen sulfide, diboron tetrafluoride; calcium hydride; chlorine trifluoride; hydrogen peroxide; hydroxyaluminum chloride; anilinium perchlorate. Decomposes when heated above 553C producing manganese(III)oxide and oxygen, which increases fire hazard. Reacts violently with aluminum (thermite reaction), potassium azide; rubidium acetylide; in the presence of hea

• Waste disposal

  Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number N450, must conform to USEPA regulations for storage, transportation, treatment, and disposal of waste. Dispose of waste material as hazardous waste using a licensed disposal contractor to an approved landfill. Dispose of contents and container to an approved waste disposal plant. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. All federal, state, and local environmental regulations must be observed. Do not discharge into drains or sewers

Manganese dioxide Upstream-Materialien And Downstream Produkte

Mangandioxid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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