As8S9 — Properties & Data | MatWorld

As8S9

Name: As8S9
Brand: MatWorld

ceramic

· JVASP-5833· As8S9

As₈S₉ is an arsenic sulfide ceramic compound belonging to the chalcogenide ceramic family, characterized by strong covalent bonding between arsenic and sulfur atoms. This material is primarily investigated in research contexts for infrared optical applications, particularly in thermal imaging systems and spectroscopy windows where transparency in the mid-to-long wavelength IR region is valuable. As₈S₉ offers a combination of optical properties and chemical stability that distinguishes it from more common oxides, though its practical deployment remains limited compared to established alternatives like zinc selenide or calcium fluoride.

infrared optics and windowsthermal imaging componentsspectroscopy instrumentationresearch-phase optical ceramicsspecialized detector applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	14.34	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	8.450	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.414	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.504	eV	DFT · OptB88vdW
↳	2.307	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.699	-	DFT · OptB88vdW
↳	6.697	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000674	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000266	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-189.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	299	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	16.45	%	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)	0.000100	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1534	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.

As8S9

Mechanical Properties

Physical Properties

Electrical Properties

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Regulatory Screening

Environmental