CAS number : 598-62-9
Molecular weight :
Molecular formula/chemical symbol :MnCO3
Description :
Treatment of aqueous solutions of manganese(II) salts with alkali metal carbonates leads to precipitation of this faintly pink solid. The carbonate is insoluble in water but, like most carbonates, hydrolyses upon treatment with acids to give water-soluble salts.
Manganese carbonate decomposes with release of carbon dioxide at 200 °C to give manganese(II) oxide:
MnCO3 → MnO + CO2
This method is sometimes employed in the production of manganese dioxide for dry-cell batteries and for ferrites.
Manganese carbonate is widely used as an additive to plant fertilizers to cure manganese deficient crops. It is also used in health foods, in ceramics as a glaze colorant and flux, and in concrete stains.
It is used in medicine as a hematinic.
Manganese is essential for aerobic life and its compounds are not highly toxic. Manganese poisoning, also known as manganism, may be caused by long-term exposure to manganese dust or fumes.
Manganese(II) carbonate |
|
IUPAC name[hide] Manganese(II) carbonate |
|
Identifiers |
|
598-62-9 Y |
|
11233 Y |
|
Jmol-3D images |
|
Properties |
|
MnCO3 |
|
114.9469 g/mol |
|
Appearance |
White to faint pink solid |
3.12 g/cm3 |
|
decomp. > 200 °C |
|
Solubility in water |
negligible |
Solubility product, Ksp |
2.24 x 10-11 |
Refractive index (nD) |
1.597 (589nm, 20°C) |
Structure |
|
hexagonal-rhombohedral |
|
Hazards |
|
EU Index |
Not listed |
Non-flammable |
|
Y (verify) (what is: Y/N?) |
USES :
Used as a desulfurization catalyst, enamel, paint and varnish pigment
Used as a fertilizer and feed additives
Used in medicine, welding accessories
Raw materials used for production point EMM
Keyword:Nanometer materials
Report :
Product name |
Manganese carbonate |
CAS:598-62-9 |
Description |
White to faint pink solid |
|
TEST ITEMS |
TEST RESULTS |
|
MnCO3 |
≥99.0% |
|
Mn |
44.0%~48.0% |
|
Nitric acid insolubles |
≤0.3% |
|
Cl |
≤0.1% |
|
Sulfate(SO4) |
≤0.2% |
|
N |
≤0.1% |
|
Fe |
≤0.005% |
|
Zn |
≤0.05% |
|
Alkali metal and an alkaline earth metal |
≤0.15% |
|
Pb |
≤0.004% |