Basic copper carbonate
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Chemical formula | Cu2(OH)2CO3 |
---|---|
OTP appearance | aqua/green solid |
Molar Mass(g/mol) | 221.114 |
Enthalpy of Formation(kJ/mol) | -595 |
Density(g/cc) | 4 |
Melting Point(°C) | 200 |
Boiling Point(°C) | 290 (decomp) |
Solubility in water(g/L) | insoluble |
NFPA 704 |
Uses
Primary
- Source of elemental copper
- Ultimate source of copper (II) acetate, copper (II) chloride, and most copper (II) compounds.
Secondary
- Part of early paths to sulfuric acid
Natural occurrence
Hazards
Production
Extraction
Grind malachite or azurite into a fine powder and pan. (separate by mass)
Synthesis
Combine copper sulfate and sodium bicarbonate in water giving copper carbonate
- 2 CuSO4 + 2 NaHCO3 + H2O → Cu2(OH)2CO3 + 2 NaHSO4 + CO2
Testing
Purification
Storage
- Storable in open container
Disposal
- Can be released into non-watery environment