Properties of calcium carbonate Synonyms pulverised Limestone chalk calcite french chalk whiting Formula CaCO3 CAS No 471 34 1 EINECS 215 279 6 Appearance Fine white powder Density 2 71 g cm3 Molar Mass 100 09 g mol Melting point 825 C Solubility very low solubility in water 0 15 g 100 mL nbsp
Limestone is by far the most common and is usually the cheapest source of calcium It is available either as a pulverised powder or in granular form Sea shells including oyster shells conch shells clam shells coral and coral sand are in granular form and consist of almost pure calcium carbonate 95 to 99 percent
This guideline summarizes pertinent information about o Appearance and odor calcium carbonate for workers and employers as well as for physicians indusuial hygienists and other occupation Calcium carbonate is a noneombustibie odorless white 31 safety and health professionals who may need such powder or nbsp