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Calcium chloride

anhydrous, powder, ≥97%

Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:



vapor pressure

0.01 mmHg ( 20 °C)






772 °C (lit.)

cation traces

magnesium and alkali salts (as sulfates): ≤3.0%

SMILES string




InChI key


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General description

Calcium chloride (CaCl2) is inexpensive, easily available calcium salt with a wide range of applications. It is a key component in deicers as it melts snow and ice. Reports suggest that CaCl2 helps in preserving the firmness of fresh-cut fruits and vegetables during the storage.


Calcium chloride was used during the assay of transglutaminase (TG) activity. It was also used for of modification of calcium alginate hydrogels.
It may be used in the following processes:
  • Modification of natural zeolite to increase its ability of fluoride removal.
  • Synthesis of calcium sulfate whiskers utilized in making polymer reinforcing composite materials.
  • Synthesis of calcium chloride-anodized aluminum composites, a solid sorbent.
  • As an extractant in the soil analysis process.
  • As a catalyst in the synthesis of aldols by reacting dimethylsilyl (DMS) enolates with aldehydes.


1, 2.5 kg in poly bottle
100, 500 g in poly bottle

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC


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Hazard Statements

Hazard Classifications

Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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