K2S3
ceramic· K2S3
K2S3 is a potassium polysulfide ceramic compound belonging to the sulfide ceramic family. While not a widely commercialized material, it represents research interest in solid-state chemistry and materials science, particularly for applications requiring sulfide-based ceramics with moderate stiffness and low density. K2S3 and related potassium sulfides are primarily explored in laboratory and academic contexts for potential uses in solid electrolytes, optical materials, and specialized ceramic applications where conventional oxides are unsuitable.
solid-state electrolytes (research)optical ceramic components (experimental)sulfide ceramic matrix compositeshigh-temperature ceramic coatings (laboratory scale)electrochemical device materials (development phase)
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 21.36 | GPa | — | ||
Poisson's Ratio(ν) | 0.2700 | - | — | ||
Shear Modulus(G) | 12.05 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 2.173 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 1.342 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 8.010 | - | — | ||
| ↳ | 6.116 range 4.465–7.766median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.1130 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -190.9 | µV/K | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.9428 | eV/atom | — |
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.