Manganese carbonate

  • Manganese carbonate (1:1)
  • Manganese(2+) carbonate
  • Manganese(2+) carbonate (1:1)
  • Manganese carbonate (Mnco3)
  • Manganese(II) carbonate
  • Manganous carbonate
Formula
MnCO3
Structure
Description
Pink to almost white powder when freshly precipitated; rhombohedral, Light brown powder upon aging.
Uses
As pigment (manganese white), drier for varnishes, in feeds.

Registry Numbers and Inventories.
CAS
598-62-9
EC (EINECS/ELINCS)
209-942-9
Merck
12,5766
Beilstein/Gmelin
8541 (G)
Swiss Giftliste 1
G-7835
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CMnO3
Formula mass
114.94
Decomposition point, °C
200
Density
3.12 g/cm3
Solubility in water
Insoluble

Hazards and Protection.
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.
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.
Small spills/leaks
While using the appropriate protective equipment, clean up spills immediately. Sweep up, then place into a suitable container for disposal.
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.

Fire.
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.

Health.
Exposure limit(s)
IDHL: 500 mg/m3
Poison_Class
4
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.
   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.
   Inhalation
Pleuritis and/or severe or fatal pneumonia have been reported among manganese workers.

First aid
 
   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.

Transport.