Na2BeF4 — Properties & Data | MatWorld

Na2BeF4

ceramic

· JVASP-20862· Na2BeF4

Sodium beryllium fluoride (Na2BeF4) is an inorganic ceramic compound belonging to the fluoride family, combining alkali metal and beryllium chemistry. This material is primarily of research and specialized industrial interest, used in molten salt reactor coolants, high-temperature thermal energy storage systems, and as a component in specialized optical or nuclear applications where its thermal stability and chemical inertness are advantageous. Na2BeF4 is notable for its low melting point relative to many ceramics and its role in advanced nuclear fuel cycle research, though its beryllium content and fluoride chemistry demand careful handling in production and deployment.

molten salt reactorsthermal energy storageadvanced nuclear systemshigh-temperature industrial fluidsspecialized optical coatings (research phase)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	41.96	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	22.19	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.465	kg/m³	DFT · OptB88vdW

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

Filter by

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	7.005	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	4.243	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	1.777	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000982	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000227	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-140.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	480.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.198	eV/atom	DFT · OptB88vdW

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.

Na2BeF4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental