CALCIUM CHLORIDE - (10043-52-4) - Physical Properties • Chemical Properties • Solubility • Uses/Function • Reactions • Thermochemistry

CALCIUM CHLORIDE

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Name:	calcium chloride	Chemical Formula:	CaCl₂

Molar Mass:	110.984 g	Mass Percent:	Ca 36.111 % Cl 63.888 %
		CAS Number:	10043-52-4

Classification

Compounds | top

• inorganic

Uses/Function

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"The anhydrous form used as a drying and dehydrating agent for organic liquids and gases, and in dessicators. The dihydrate and hexahydrate forms are used for antifreeze and refrigerating sol[ution]ns, in fire extinguishers, etc. (a 40% sol[utio]n freezes at -41°); to preserve wood, stone; manuf[acture] ice, glues, cements; fireproofing fabrics; automobile antifreeze mixtures; to melt ice and snow; as coagulant in rubber manuf[acturing], as size in admixture with starch paste; in concrete mixes to give quicker initial set and greater strength; freezeproofing of coal and ores; dust control on unpaved roads; sizing and finishing cotton fabrics; as brine for filling inflatable tires on tractors to increase traction. Electrolyte replacement. Has been used as diuretic, urinary, acidifier, antiallergic. May be used intravenously in hypocalcemic states such as milk fever." ¹

Physical Properties

Compounds | top

		Boiling Point:*	1935.5°C ² = 2208.65 K = 3515.9°F

* - 1 atm pressure

Bonding

Compounds | top

Bonding:

ionic

Ionic Character:

65.45 %

Thermochemistry

Compounds | top

State of Matter	Enthalpy of Formation		Entropy		Gibbs Free Energy
	kcal/mol	kJ/mol	cal/(mol×K)	J/(mol×K)	kcal/mol	kJ/mol
(s)	-190.2 ³	-795.7968	25.0 ³	104.6	-178.8 ³	-748.0992
(ℓ)	-185.0 ³	-774.04	29.6 ³	123.8464	-175.0 ³	-732.2
(g)	-112.7 ³	-471.5368	69.3 ³	289.9512	-114.5 ³	-479.068

Reactions

Compounds | top

CaCO3 (s) + 2 HCl (aq) → CaCl2 (aq) + H2O (ℓ) + CO2 (g) ⁴
2 HCl (aq) + Ca(OH)2 (aq) → CaCl2 (aq) + H2O (ℓ) ⁵
2 HCl (aq) + CaCO3 (s) → CaCl2 (aq) + H2O (ℓ) + CO2 (g) ⁶

Sources

(1) - The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 13th ed.; Budavari, S.; O'Neil, M.J.; Smith, A.; Heckelman, P. E.; Kinneary, J. F., Eds.; Merck & Co.: Whitehouse Station, NJ, 2001; entry 1660.

(2) - Lide, David R. CRC Handbook of Chemistry and Physics, 84th ed.; CRC Press: Boca Raton, FL, 2003; p 4-49.

(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.

(4) - Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; p 185.

(5) - Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; p 90.

(6) - Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; pp 94, 181.


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