CaC2 — Properties & Data | MatWorld

CaC2

Name: CaC2
Brand: MatWorld

ceramic

· CaC2

Calcium carbide (CaC₂) is an inorganic ceramic compound that serves primarily as a chemical precursor rather than a structural engineering material. It is most widely used in acetylene gas generation for welding and cutting torches, and as a raw material in the synthesis of cyanamide and other nitrogen-containing chemicals. Engineers select calcium carbide for applications where its reactivity with water to produce acetylene is essential, or where its role as an intermediate in chemical manufacturing justifies its use despite its brittleness and moisture sensitivity.

acetylene gas generationwelding and cutting torch fuelchemical synthesis precursorcyanamide productioncalcium carbide lamps (historical)

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	58.06	GPa	DFT · OptB88vdW
↳	54.68 range 53.38–55.98median of 2 measurements	GPa	DFT
Poisson's Ratio(ν)	0.3600	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	26.27	GPa	DFT · OptB88vdW
↳	17.28 range 15.22–19.34median of 2 measurements	GPa	DFT

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.757	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.523	eV	DFT · OptB88vdW
↳	3.037	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	9.451	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.426	-	DFT · OptB88vdW
↳	3.970	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00188	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00100	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-174.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	429.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	4.220	%	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)	0.07540	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.1125	eV/atom	DFT · OptB88vdW
↳	-0.2052	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.

CaC2

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Regulatory Screening

Environmental