Calcium Carbonate

CAS #: 1317-65-3; 471-34-1

Synonyms: Carbonic acid, calcuim salt; precipitated calcium carbonate, commercial form; prepared calcium carbonate, native purified form; Dolomite; Limestone

Uses: Source of lime; neutralizing agent, filler, and extender in rubber, plastics, paints; opacifying agent in paper; fortification of bread; putty; tooth powders; antacid; whitewash; Portland cement; sulfur dioxide removal from stack gases; metallurgical flux; analytical chemistry; carbon dioxide generation (laboratory).   Note: Calcium carbonate is a major cause of boiler scale when hard water is used in heating systems.

Hazard: A nuisance particulate dust. Exposure Routes:  inhalation, skin and/or eye contact Symptoms:  Irritation eyes, skin, respiratory system; cough
Target Organs:  Eyes, skin, respiratory system. CALCIUM CARBONATE is non-combustible.  Decomposes at high temperature (825°C) to give gaseous carbon dioxide and calcium oxide (quicklime).  Incompatible with acids, alum, ammonium salts, fluorine, magnesium.  Reacts with acids and acidic salts to generate gaseous carbon dioxide with effervescence (bubbling).  The reaction with concentrated solutions of acids is rapid and exothermic.  The effervesence can create extensive foaming. Ignites on contact with fluorine.