NaAsO2 — Properties & Data | MatWorld

NaAsO2

ceramic

· JVASP-4435· NaAsO2

Sodium arsenite (NaAsO2) is an inorganic ceramic compound containing arsenic in the +3 oxidation state, typically encountered as a white to off-white crystalline solid. Historically used in wood preservation, pesticide formulations, and glass manufacturing, this material is now primarily restricted or phased out in most developed economies due to arsenic toxicity concerns; modern applications are limited to specialized research contexts, legacy material remediation, or highly controlled industrial processes where alternatives are impractical. Engineers considering this material must navigate strict regulatory frameworks and occupational health requirements, making it relevant only in niche scenarios such as historical material analysis, specialized ceramics research, or legacy equipment maintenance rather than new product development.

legacy wood preservative systemshistorical glass formulationsarsenic-compound researchspecialized ceramic pigmentshazardous material remediation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1244	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	3.394	eV	DFT · OptB88vdW
Electron Effective Mass(m*e)	1.517	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.267	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00104	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000491	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-247.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	323	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.620	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.

NaAsO2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental