Calcium carbonate: Difference between revisions
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{{Compound|chemf=CaCO3 | {{Compound|chemf=CaCO3 | ||
|density=2.711|mm=100|sol_aq=0.013|mp=decomp | |density=2.711|mm=100|sol_aq=0.013|mp=decomp | ||
|nowa=yes | |||
|group=salts | |group=salts | ||
|stp_p=powder|stp_q=white | |stp_p=powder|stp_q=white | ||
|nfpa_h=1 | |nfpa_h=1 | ||
|decomp={{DecompRow|input=calcium carbonate|temp=550|output={{#Chem: CaO, CO2}}}}}} | |decomp={{DecompRow|input=calcium carbonate|temp=550-880|output={{#Chem: CaO, CO2}}}}}} | ||
Along with [[silicon dioxide]] and [[aluminum oxide]], calcium carbonate is one of the most common substances on earth. | Along with [[silicon dioxide]] and [[aluminum oxide]], calcium carbonate is one of the most common substances on earth. | ||
==Uses== | ==Uses== | ||
Latest revision as of 17:03, 18 October 2023
| Chemical formula | CaCO3 |
|---|---|
| OTP appearance | white powder |
| Molar Mass(g/mol) | 100 |
| Density(g/cc) | 2.711 |
| Melting Point(°C) | decomp |
| Solubility in water(g/L) | 0.013 |
| NFPA 704 |  0
1
0
|
| Thermal Decomposition | calcium carbonate
550-880°C CaO,CO2 |
Along with silicon dioxide and aluminum oxide, calcium carbonate is one of the most common substances on earth.
Uses
Calcium carbonate is a central substance to the chemistry of Novogenesis. It is available from a large number of sources, relatively safe chemically and biologically, and provides routes to and from a large variety of other salts via metathesis and thermal decomposition. Its insolubility and nontoxic nature make it an ideal metathesis product.
Primary
- Calcium carbonate is the feedstock for calcium oxide and calcium hydroxide, strong alkalis.
Secondary
- Pharmacopia: Antacid
- Source of carbon dioxide by thermal decomposition
Natural Occurrence
- It occurrs naturally as the minerals calcite, limestone, and chalk, among others.
- Sea shells and egg shells are primarily calcium carbonate
- Some white sand is primarily calcium carbonate
Locations
- Limestone
- BLM
- California
- Chambliss Rock Collecting Area
- Marble Mountain Rock Collecting Area
- California
- BLM
Hazards
Calcium carbonate exposure and ingestion are relatively safe. Its unreactive nature makes it fairly bio-inert. Inhalation of fine powder is safER than the inhalation of almost anything else.
Production
- Gathering any of the naturally occurring versions
- from any soluble calcium salt (-hydroxide, -chloride, -acetate, etc)
- via bubbling carbon dioxide through the solution, causing the carbonate to precipitate.
- via metathesis with another carbonate compound
- from -oxide via exposure to air