Product Identification

Product Name

Manganese carbonate

Synonyms

Manganese carbonate (1:1)
Manganese carbonate (Mnco3)
Manganese(2+) carbonate
Manganese(2+) carbonate (1:1)
Manganese(II) carbonate
Manganous carbonate

CAS

598-62-9

Formula

CMnO3

Molecular Weight

114.94

EINECS

209-942-9

Merck

12,5766

Beilstein/Gmelin

8541 (G)

Physical and Chemical Properties

Appearance

Pink to almost white powder when freshly precipitated; rhombohedral, Light brown powder upon aging.

Solubility in water

Insoluble

Density

3.12 g/cm3

Usage

As pigment (manganese white), drier for varnishes, in feeds.

First Aid Measures

Ingestion

Most exposures to manganese are chronic. Vomiting 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.

Inhalation

Remove from exposure to fresh air immediately.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower lids.

Handling and Storage

Storage

Store in a cool, dry place. Keep container closed when not in use.

Handling

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.

Hazards Identification

Inhalation

Pleuritis and/or severe or fatal pneumonia have been reported among manganese workers.

Ingestion

Pleuritis and/or severe or fatal pneumonia have been reported among manganese workers. Metal fume fever has been reported after inhalation exposure to manganese oxide fumes.

Exposure Controls/Personal Protection

Personal Protection

Wear safety glasses and chemical goggles if splashing is possible. Wear appropriate protective gloves and clothing to prevent skin exposure.

Respirators

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.

Exposure Effects

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.

Exposure limit(s)

IDHL: 500 mg/m3

Poison Class

4

Fire Fighting Measures

Fire Fighting

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.

Accidental Release Measures

Small spills/leaks

While using the appropriate protective equipment, clean up spills immediately. Sweep up, then place into a suitable container for disposal.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures. Gradually becomes light brown in air.

Incompatibilities

Strong oxidizing agents, strong acids.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.