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Calcium dichloride

Properties, data and information sources.

 

Contents

Names and Identifiers

Name
Calcium dichloride
Formula
CaCl2
Molar mass
110.978 (g/mol)
CAS registry number
10043-52-4
EC number EINECS
233-140-8
InChI Key
UXVMQQNJUSDDNG-UHFFFAOYSA-L

Other names, synonyms
Calcium chloride

INCI name
CALCIUM CHLORIDE

 

Chemical formulas

Molecular formula and structural formula of Calcium dichloride:

 

CaCl2

Mr = 110.978 g/mol
SMILES: [Cl-].[Cl-].[Ca+2]

 

Data and Properties

Colourless and odorless, hygroscopic solid.

melting point
773 °C
boiling point
1670 °C
density
2.15 g cm-3 at 20 °C
standard enthalpy of formation
-795.43 kJ/mol at 25 °C
standard entropie
108.4 J/(mol K)
Gibbs free energy
-748.81 kJ/mol
heat capacity
72.89 J/(mol K)

 

Percentage and isotopic composition:

Mass-related elemental composition and isotope proportions of the compound Calcium dichloride - CaCl2 - calculated based on molecular mass.

Symbol
Element ENumber x
of atoms ExData of the element
and isotopes *Percentages
of isotopesPercentage of
Ex in formula massCa
Calcium1ΣAr = 40.078 u
40Ca: 39.96259 u [96,941 %]
41Ca: 40.96228 u [<< 1 %]
42Ca: 41.95862 u [0,647 %]
44Ca: 43.95548 u [2,086 %]
46Ca: 45.95369 u [0,004 %]
48Ca: 47.95252 u [0,187 %]
43Ca: 42.95877 u [0,135 %] 
40Ca: 35.00875 %
41Ca: trace
42Ca: 0.23365 %
44Ca: 0.75333 %
46Ca: 0.00144 %
48Ca: 0.06753 %
43Ca: 0.04875 %
36.1135 %Cl
Chlorine2 Ar = 35.45 u
ΣAr = 70.9 u
35Cl: 34.96885 u [75,80 %]
36Cl: 35.96831 u [<< 1 %]
37Cl: 36.9659 u [24,2 %] 
35Cl: 48.42599 %
36Cl: trace
37Cl: 15.46054 %
63.8865 %

*) The third column lists the atomic masses or isotope masses of the elements involved and - in square brackets - the natural isotope composition.

 

More calculated data

The molar mass is M = 110.978 grams per mole.

The amount of substance in one kilogram of the substance is n = 9.011 mol.

The amount of substance in one gram of the substance is n = 0.009 mol.

Monoisotopic mass: 109.9002963 Da - related to 40Ca35Cl2.

 

Hazard warnings according to GHS

(General information without guarantee of accuracy and completeness! The information does not replace the chemical safety data sheet or a risk assessment, but rather provides a general overview of the risk posed by the hazardous substance.

Signal word: Warning

GHS hazard statements (H phrases):


H319
Causes serious eye irritation

LD50 (rat, oral): 1000 mg/kg.

Labeling in the EU: See ECHA Substance Infocard 100.030.115.

For toxicology and occupational safety when handling Calcium dichloride as well as measures to be taken in case of danger, see: Hazardous Substances Information System GESTIS, ZVG-Nr. 001910.

 

External Sources

PubChem:ID 5284359ChemSpider:ID 23237UNII of the FDA (USA):Unique Ingredient Identifier OFM21057LPEPA CompTox Chemicals Dashboard:DTXSID5020235Other CAS RN:139468-93-2; 2305917-51-3 (also used, outdated or deleted registration numbers)

 

Manufacturers and Sources of Supply

The table below lists producers and suppliers of Calcium dichloride as a commercial chemical for laboratories, research, industry and production with the corresponding contact details.

 

Literature Sources

[0] - Specialist and research articles in scientific journals via PubMed: Calcium_chloride.

 

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Last update: 2026-01-10

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