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The Properties Of Calcium Chloride

JIUXU INDUSTRIAL (HK) CO., LIMITED | Updated: May 02, 2018

Physical property

Melting point 782 C

Density 1.086 g/mL at 20 degree C

Boiling point 1600 C

Flash point >1600 C

Water soluble 740 g/L (20 C)

Colorless cubic crystals, white or gray, are granular, honeycomb, spherical, irregular, granular and powdery. Micro poison, odorless and bitter taste.

The hygroscopicity is very strong, and it is easy to deliquescence when exposed to air. It is soluble in water, and at the same time gives off a lot of heat (the enthalpy of dissolution of calcium chloride is -176.2cal/g), and its aqueous solution is slightly acidic. Soluble in alcohol, acetone, and acetic acid. The CaCl2? 8NH3 and CaCl2? 4C2H5OH complexes were formed respectively with ammonia or ethanol. At low temperature, the solution crystallized into six water, and gradually heated to 30 C, dissolved in its own crystalline water, continued heating and gradually lost water to two water at 200 c, and then heated to 260 centigrade to become white and porous calcium chloride.

Chemical property


The pH value of 5% aqueous solution is 4.5~9.2. 1.7% aqueous solution isosotic with serum. The product is made from calcium carbonate and hydrochloric acid as an antidote for magnesium poisoning. Calcium ions can form insoluble calcium fluoride with fluoride, and can be used for the rescue of fluorosis.

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