CaCl2
calcium chloride · calcium dichloride
Calcium chloride is a stable, moisture-absorbing salt frequently utilized for its ability to effectively remove water from industrial and laboratory environments.

About calcium chloride
Calcium chloride is a robust, thermodynamically stable inorganic compound characterized by its insulating electronic nature. Due to its high affinity for moisture, it is a staple material for desiccation and environmental control processes.
Beyond its role as a drying agent, this compound is extensively studied across numerous structural configurations. Its stability and predictable behavior make it a fundamental material in chemical processing and road maintenance applications.
Key Properties
Cross-validated computational properties for calcium chloride, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Synthesis Routes
Literature-extracted synthesis procedures targeting CaCl2.
Applications
Where calcium chloride is used.
Frequently Asked Questions
Common questions about calcium chloride, answered from cross-validated data.
What is CaCl2?
Calcium chloride is a stable, moisture-absorbing salt frequently utilized for its ability to effectively remove water from industrial and laboratory environments.
What is CaCl2 used for?
What is the band gap of CaCl2?
Is CaCl2 a metal, semiconductor, or insulator?
Is CaCl2 thermodynamically stable?
How many polymorphs of CaCl2 are known?
How is CaCl2 synthesized?
What elements does CaCl2 contain?
Where does the data for CaCl2 come from?
How It Compares
As a highly stable and well-documented halide, calcium chloride serves as a benchmark material for understanding ionic bonding and hygroscopic behavior in simple metal-halide systems.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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