Calcium carbonate

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Calcium carbonate
Chemical formula CaCO3
OTP appearance white powder 
Molar Mass(g/mol) 100 
Melting Point(°C) decomp 
Density(g/cc) 2.711 
Solubility in water(g/L) 0.013
NFPA 704
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Thermal Decomposition
calcium carbonate
550°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

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

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

Testing

Purification

Storage

Disposal

See Also

References