NpS

ceramic

· JVASP-15881· NpS

Neptunium monosulfide (NpS) is a ceramic compound belonging to the actinide chalcogenide family, characterized by strong ionic-covalent bonding typical of transition metal sulfides. This material is primarily of research and academic interest rather than commercial production, studied for its structural, electronic, and thermal properties within the actinide materials science community. NpS would be relevant to nuclear fuel development, nuclear waste management, and fundamental materials research exploring actinide chemistry, where understanding its behavior at extreme conditions and in radiation environments informs broader understanding of actinide-bearing systems.

nuclear fuel researchactinide materials sciencehigh-temperature ceramics (research)radiation effects studiesfundamental materials characterization

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	14,798.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3800	-	DFT · OptB88vdW
Shear Modulus(G)	6,425.2	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3846	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	4.013	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000217	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000213	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	12.31	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	12.20	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.636	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.

NpS — Properties & Data | MatWorld

NpS

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental