碳酸钙

Calcium carbonate is a dietary supplement used when the quantity of calcium taken in the diet is not enough. Used as an antacid to relieve heartburn, acid indigestion and upset belly. Practiced in the expression industry. Also widely used as a filler in plastics and is used in metallurgy of iron.

Calcium carbonate is non-combustible. Decomposes at high temperature to give gaseous carbon dioxide and calcium oxide (quicklime). It ignites when contact with fluorine.

MFCD00010906

207-439-9

CaCO₃

100.09

800° dec.

2.930

1.6583

Ambient temperatures.

Powder

Insoluble in water but soluble in acids.

14,1657

Maximum level of impurities: Insoluble in dilute hydrochloric acid 0.01%, Cl 0.001%, F 0.0015%, SO₄ 0.005%, NH₄ 0.003%, Ba 0.01%, Heavy Metals (as Pb) 0.001%, Fe 0.002%, Mg 0.01%, K 0.01%, Na 0.01%, Sr 0.1%

FF9335000

是