Conversion Calculators
Materials of Construction
Methods of Analysis
CaCl2 Production
Storage & Handling
Physical Properties
Solids
Solutions
Product Data Sheets
Safety Data Sheets
About Us Products Applications Resources Contact Us Search
Solids Properties
Tetra Technologies
Calcium chloride (CaCl2) is a white, crystalline, soluble salt that can form several hydrates:

Calcium chloride monohydrate CaCl2•H2O
Calcium chloride dihydrate CaCl2•2H2O
Calcium chloride tetra hydrate CaCl2•4H2O
Calcium chloride hexahydrate CaCl2•6H2O

The physical properties of the anhydrous salt and hydrates are given below

 
CaCl2
CaCl2∙H20 CaCl2∙2H20 CaCl2∙4H20 CaCl2∙6H20

CAS#

10043-52-4

22691-02-07

10035-04-8 25094-02-4 7774-34-7
Molecular Wt.
111
129
147
183
219
% CaCl2
100
86.03
75.49
60.63
50.66
% Water
0
13.97
24.51
39.37
49.34
Melting Point,
°C
772
260
176
45
30
Density1, g/cm3
2.22
2.24
1.85
1.83
1.72
Heat of hydration, kJ/kg
-
-240
-295
-600
-840
Heat of solution, kJ/kg
-680
-380
-290
-50
80
Specific heat,
J/(K•kg)
670
840
1170
1340
1420
Vapor pressure in mbar @ 25°C
-
undetectable
1
4
7
1Indicates the density of the crystal, not the bulk density

 

Solubility for anhydrous calcium chloride in a few organic solvents is given below.

Methanol
At temperatures below 55°C CaCl2, forms CaCl2·4CH3OH with methanol and below 55°C CaCl2·3CH3OH is formed.

 Temperature, °C

 % CaCl2

 0

 15.5

 10

 17.5

 20

 19.6

 30

 21.9

 40

 24.2

 50

 26.7

 55

 27.9

 75

 33.9

Ethanol
CaCl2 forms CaCl2·3C2H5OH with ethanol.

 Temperature, °C

 % CaCl2

 0

 15.5

 10

 17.9

 20

 20.5

 30

 23.2

 50

29.2

Acetone
0.08 g/L at 20°C

Glycerine
Readily soluble. At high concentrations a “glass” is formed.

Diethyl ether
Sparingly soluble





Home | SearchSite MapTerms & Conditions TETRA Chemicals
© 2005-2017 TETRA Technologies, Inc. All rights reserved.