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|Jmol-3D images||Image 1|
|Molar mass||114.9469 g/mol|
|Appearance||White to faint pink solid|
|Melting point||decomp. > 200 °C|
|Solubility in water||negligible|
|Solubility product, Ksp||2.24 x 10-11|
|Solubility||soluble in dilute acid, CO2
insoluble in alcohol, ammonia
|Refractive index (nD)||1.597 (589nm, 20°C)|
|EU Index||Not listed|
| (what is: / ?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Production and uses
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.
- MnCO3 → MnO + CO2
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.
- Arno H. Reidies "Manganese Compounds" Ullmann's Encyclopedia of Chemical Technology 2007; John Wiley
- "How To Stain Concrete with Manganese"