Sb2O3

Name: Sb2O3
Brand: MatWorld

semiconductor

· Sb2O3

Antimony trioxide (Sb₂O₃) is a ceramic semiconductor compound that exists in multiple crystal phases, primarily used as a flame retardant additive and in specialized optical and electronic applications. It is widely employed in plastics, textiles, and coatings to enhance fire resistance, often in combination with halogenated compounds for synergistic effect. The material is also investigated for infrared optics, gas sensors, and photocatalytic devices, making it valuable in contexts where thermal stability and chemical inertness are required alongside flame-suppression functionality.

flame retardant additivespolymer compositesinfrared opticsgas sensing devicespigments and coatingsphotocatalytic applications

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	2,772.6	ksi	DFT
↳	4,839.9	ksi	DFT · OptB88vdW
↳	2,643.7	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	2.228	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.1600	-	DFT · OptB88vdW
↳	0.09900	-	DFT · PBE
Shear Modulus(G)3 entries	2,961.6	ksi	DFT
↳	4,345.3	ksi	DFT · OptB88vdW
↳	2,894.4	ksi	DFT · PBE

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
Density(ρ)	0.2005	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)4 entries	3.310	eV	Measured
↳	0.000	eV	DFT · PBE
↳	2.163	eV	DFT · OptB88vdW
↳	3.367	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.618	-	DFT · OptB88vdW
↳	4.129	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.367	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00105	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00104	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-149.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	259.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	1.900	%	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.

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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.01000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)3 entries	-0.8970	eV/atom	DFT
↳	-1.437	eV/atom	DFT · OptB88vdW
↳	-1.484	eV/atom	Measured

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

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

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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.

Sb2O3 — Properties & Data | MatWorld

Sb2O3

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