Na4WO4 — Properties & Data | MatWorld

Na4WO4

ceramic

· JVASP-42416· Na4WO4

Sodium tungstate (Na₄WO₄) is an inorganic ceramic compound containing tungsten oxide in an alkali matrix, typically encountered as a powder or crystalline solid in industrial chemistry. This material is primarily used in specialty chemical applications including corrosion inhibitors, catalytic supports, and flame-retardant formulations, where tungsten's high density and oxidation resistance provide functional benefits. While not a mainstream structural ceramic, sodium tungstate is valued in niche applications where tungsten compounds' chemical stability and thermal properties are leveraged; it is also of interest in materials research for potential use in advanced ceramics, pigments, and electrochemical devices.

corrosion inhibitorscatalytic supportsflame retardantsspecialty chemicalselectrochemical applicationsadvanced ceramics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.558	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.285	eV	DFT · OptB88vdW
↳	3.519	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	8.853	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.636	-	DFT · OptB88vdW
↳	3.360	-	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	0.000331	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00334	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-485.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	340.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	1.200	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.953	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.

Na4WO4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental