应用
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.

Grade Specifications
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%

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

基本信息

MDL
MFCD00010906

EINECS
207-439-9

分子式
CaCO₃

分子量
100.09

熔点
800° dec.

密度
2.930

折射率
1.6583

灵敏度
Ambient temperatures.

形态
Powder

溶解性
Insoluble in water but soluble in acids.

Merck
14,1657

安全信息

RTECS
FF9335000

TSCA
是