- Manganese protoxide
- Manganese(II) oxide
- Manganese monooxide
- Manganese monoxide
- Manganese oxide
Green cubic crystals or powder.
Textile printing, analytical chemistry, catalyst in manufacture of allyl alcohol, ceramics, paints, colored glass, bleaching tallow, animal feeds, fertilizers, food additive and dietary supplement.
Registry Numbers and Inventories.
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Solubility in water
Heat of fusion
Hazards and Protection.
Keep tightly closed. Store in a cool, dry location.
Do not breath dust. Avoid contact with eyes, skin and clothing. Avoid prolonged or repeated exposure. Use only in a chemical fume hood.
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
NIOSH approved respirator.
Wear approved safety equipment. Sweep up and place in a bag to hold for wast disposal. Avoid raising a dust. Ventilate area. Wash stpill site.
Stable at normal temperatures and pressures.
Strong oxidizing agents.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.
IDHL: 500 mg/m3
Effects include a parkinsonism-like syndrome, muscle weakness, impairment of speech, gait disturbances, tremor, slurred speech, diminished libido and behavioral disturbances. Symptoms may last 1 to 2 months or longer. Manganese injection has produced teratogenic effects in experimental animals, although ingestion and inhalation studies showed no effect. Manganese deficiency during gestation has demonstrated adverse effects on the central nervous system of the developing fetus in experimental animals.
Non-specific GI effects may occur including anorexia, constipation or diarrhea, nausea, vomiting, and abdominal pain.
Pleuritis and/or severe or fatal pneumonia have been reported among manganese workers.
Causes irritation. Hives may rarely occur.
Most exposures to manganese are chronic. Emesis and activated charcoal may not be useful in chronic cases. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
No serious ocular toxicity has been reported from metal fume fever.