A lustrous brittle silvery solid.
In the Manufacture of steel, for rock crushers, railway points and crossings, wagon buffers, as a constituent of several alloys, e.G., Ferromanganese, copper manganese, manganin.
Registry Numbers and Inventories.
Tumorigen; Human Data; Primary Irritant
Swiss Giftliste 1
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
1 at 1292 C
Solubility in water
Heat of vaporization
Hazards and Protection.
Protect containers against physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
ELIMINATE all ignition sources. Do not touch or walk through spilled material. Stop leak if you can do it without risk.
Superficially oxidized on exposure to air.
Reacts with manganese with incandescence and a feeble explosion.
Decomposition cold water slowly, rapidly on heating; converted by fluorine into di- and trifluoride, by chlorine into the dichloride. Toxic fumes are formed when this material is heated.
Use dry chemical to extinguish.
Moderate fire hazard, in form of dust or powder, when exposed to flame.
Oxides from metallic fires are a severe health hazard. Fire may produce irritating, corrosive and/or toxic gases.
TLV (as TWA): ppm; 5 (dust) or 1 (fume) mg/m3; as STEL: 3 mg/m3 (fume) (ACGIH 1994-1995). MAK: ppm; 0.5 mg/m3 (1994).
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.
Pleuritis and/or severe or fatal pneumonia have been reported among manganese workers.
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 victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes.
Immediately flush with running water for at least 20 minutes.