CaI2

Name: CaI2
Brand: MatWorld

ceramic

· CaI2

Calcium iodide (CaI2) is an ionic ceramic compound belonging to the halide family, characterized by its layered crystal structure and moderate mechanical stiffness. While not widely used in traditional structural applications, CaI2 is primarily employed in specialized domains including hygroscopic desiccants, X-ray imaging scintillators, and emerging two-dimensional materials research; its notable layered structure and exfoliation behavior make it a candidate material for nanosheet production and thin-film device applications in advanced electronics and photonics.

X-ray scintillatorshygroscopic desiccantstwo-dimensional materials researchlayered nanosheet productionspecialized ceramics

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	2,152.4	ksi	DFT · OptB88vdW
Exfoliation Energy(Eexf)	82.42	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	1,269.1	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1464	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)4 entries	5.980	eV	Measured
↳	3.446	eV	DFT · OptB88vdW
↳	4.374	eV	DFT · TBmBJ
↳	4.630	eV	DFT · HSE06
Dielectric Constant (Relative Permittivity)(εr)	6.805	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.213	-	DFT · OptB88vdW
↳	3.708	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.703	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.383	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00342	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00117	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-302.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	235.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.716	eV/atom	DFT · OptB88vdW
↳	-1.855	eV/atom	Measured

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

CaI2 — Properties & Data | MatWorld

CaI2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental