SO2

ceramic

· SO2

SO₂ (sulfur dioxide) is an inorganic ceramic compound classified as a non-metallic oxide material. In its solid state, it serves niche applications in specialized chemical processing and laboratory settings, though it is more commonly encountered as a gas or liquid industrial chemical. This material is notable for its chemical reactivity and use as a reducing agent, bleaching agent, and preservative, making it relevant to engineers working in chemical processing, metallurgical refining, and environmental remediation systems rather than as a structural ceramic.

chemical processing and synthesismetallurgical refiningpulp and paper bleachinggas scrubbing systemslaboratory reagent applicationsenvironmental remediation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.07439	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)2 entries	2.646	eV	DFT · OptB88vdW
↳	4.238	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	10.95	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.174	-	DFT · OptB88vdW
↳	2.603	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.2906	C/m²	DFT · OptB88vdW
↳	0.2669	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00104	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00113	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-306.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	290.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.087	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.

SO2 — Properties & Data | MatWorld

SO2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental