As
metal· As
Arsenic is a brittle metalloid element with a gray, crystalline structure, commonly employed in semiconductor and optoelectronic device manufacturing where its electronic properties are exploited in compound semiconductors. It is widely used in gallium arsenide (GaAs) and indium arsenide (InAs) systems for high-frequency and photovoltaic applications, as well as in traditional copper-based alloys for strength enhancement. Engineers select arsenic-containing compounds when high electron mobility, direct bandgap properties, or superior performance in RF/microwave circuits is required, though its toxicity demands rigorous handling protocols and has led to reduced use in consumer electronics compared to earlier decades.
semiconductor devicesgallium arsenide optoelectronicsphotovoltaic cellsRF and microwave integrated circuitshigh-speed transistorscopper alloy strengthening
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | — | Pa | — | — | |
| ↳ | — | Pa | — | — | |
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | — | |
Elastic Anisotropy(AU) | — | - | — | — | |
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | — | |
Exfoliation Energy(Eexf) | — | meV/atom | — | — | |
Poisson's Ratio(ν)2 entries | — | - | — | — | |
| ↳ | — | - | — | — | |
Shear Modulus(G)2 entries | — | Pa | — | — | |
| ↳ | — | Pa | — | — |
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 | |
|---|---|---|---|---|---|
Density(ρ) | — | kg/m³ | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — | |
Magnetic Moment(μB) | — | µB | — | — | |
Piezoelectric Modulus(eij) | — | C/m² | — | — | |
Seebeck Coefficient(S) | — | µV/K | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | — | eV/atom | — | — | |
Formation Energy(ΔHf) | — | eV/atom | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
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.