WO2.9

ceramic

· WO2.9

WO2.9 is a tungsten oxide ceramic with a substoichiometric composition, belonging to the family of reduced tungsten oxides that exhibit mixed-valence tungsten states. This material is of primary interest in research and specialized applications where its electronic and catalytic properties are leveraged, including gas sensing, photocatalysis, and electrochromic devices. WO2.9 and related tungsten oxide phases are notable for their potential in energy storage systems and environmental remediation applications, where the oxygen deficiency creates active sites distinct from fully oxidized tungsten trioxide (WO3).

Gas sensing and detectionPhotocatalytic materialsElectrochromic coatingsCatalytic convertersResearch/development materialsEnergy storage and battery materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Thermal Conductivity(k)2 entries	1.782	BTU/(hr·ft·°F)	—
↳	1.782	BTU/(hr·ft·°F)	27°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
Electrical Conductivity(σ)	807.6	S/cm	27°C
Electrical Resistivity(ρe)	0.0000124	Ω·m	27°C
Thermoelectric Power Factor(PF)	0.0000642	W/(m·K²)	27°C
Seebeck Coefficient(S)	-28.21	μV/K	27°C
Thermoelectric Figure of Merit(zT)	0.00625	-	27°C

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

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.

WO2.9

Thermal Properties

Electrical Properties

Regulatory Screening

Environmental