Calcium carbonate

  • Calcite
  • Chalk
  • Limestone
  • Marble chips
Formula CaCO3
Description Gray to tan solid.

Registry Numbers and Inventories.
CAS 1317-65-3
EC (EINECS/ELINCS) 215-279-6
RTECS EV9580000
RTECS class Other
Beilstein/Gmelin 8544 (G)
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Korea ECL Listed

Formula CCaO3
Formula mass 100.1
Melting point, C 1340
Density 2.71 g/cm3
Solubility in water 10 mg/L
Heat of fusion 14.2 kJ/ol

Hazards and Protection.
Storage Store in a cool, dry place.
Handling Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
Protection Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions.
Stability Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities Acids, aluminum, strong oxidizers, magnesium.
Decomposition Carbon monoxide, carbon dioxide.

Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire.

Exposure limit(s) NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
Exposure effects
   Ingestion Low hazard for usual industrial handling.
   Inhalation Dust is irritating to the respiratory tract. Low hazard for usual industrial handling. May cause liver abnormalities.
   Skin Dust causes mechanical irritation.
   Eyes Dust may cause mechanical irritation.

First aid
   Ingestion If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid.
   Inhalation Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.