NaAs — Properties & Data | MatWorld

NaAs

ceramic

· JVASP-36329· NaAs

Sodium arsenide (NaAs) is an ionic ceramic compound combining sodium and arsenic in a rock-salt crystal structure. While primarily of research and theoretical interest rather than established industrial use, NaAs belongs to the family of binary pnictide ceramics that show potential in semiconductor and optoelectronic applications due to their electronic properties. The material is notable as a model compound for studying the mechanical and thermal behavior of ionic pnictides, though toxicity and chemical reactivity concerns limit practical engineering deployment compared to more stable alternatives like GaAs or InP.

semiconductor researchpnictide materials studyoptoelectronics (exploratory)materials science databaseshigh-pressure physicscrystal structure characterization

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	24.17	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)	10.06	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.975	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.7430	eV	DFT · OptB88vdW
↳	1.299	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	8.006	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.40	%	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.1406	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3127	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.

NaAs

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental