Manganese(II) carbonate
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Manganese carbonate is a compound with the chemical formula MnCO3. Manganese carbonate occurs naturally as the mineral rhodochrosite but it is typically produced industrially. It is a pale pink, water-insoluble solid. Approximately 20,000 metric tonnes were produced in 2005.[3]
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
Manganese(II) carbonate | |
Identifiers | |
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3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.009.040 |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
MnCO3 | |
Molar mass | 114.95 g mol−1 |
Appearance | White to faint pink solid |
Density | 3.12 g/cm3 |
Melting point | 200–300 °C (392–572 °F; 473–573 K) decomposes[1][2] |
negligible | |
Solubility product (Ksp) |
2.24 x 10−11 |
Solubility | soluble in dilute acid, CO2 insoluble in alcohol, ammonia |
+11,400·10−6 cm3/mol | |
Refractive index (nD) |
1.597 (20 °C, 589 nm) |
Structure | |
hexagonal-rhombohedral | |
Thermochemistry | |
Heat capacity (C) |
94.8 J/mol·K[2] |
Std molar entropy (S⦵298) |
109.5 J/mol·K[2] |
Std enthalpy of formation (ΔfH⦵298) |
-881.7 kJ/mol[2] |
Gibbs free energy (ΔfG⦵) |
-811.4 kJ/mol[2] |
Hazards | |
Flash point | Non-flammable |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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