215619

Silicon

powder, −325 mesh, 99% trace metals basis

• Fórmula lineal: Si
• Número de CAS: 7440-21-3
• Peso molecular: 28.09
• EC Number: 231-130-8
• MDL number: MFCD00085311
• UNSPSC Code: 12141911
• PubChem Substance ID: 24852908
• NACRES: NA.23

Propiedades

• Quality Level: 100
• assay: 99% trace metals basis
• form: powder
• particle size: −325 mesh
• bp: 2355 °C (lit.)
• mp: 1410 °C (lit.)
• density: 2.33 g/mL at 25 °C (lit.)
• SMILES string: [Si]
• InChI: 1S/Si
• InChI key: XUIMIQQOPSSXEZ-UHFFFAOYSA-N

Descripción

General description

Silicon powder is a fine, gray powder. This silicon powder has been passed through a 325-mesh screen, meaning that the particles are small enough to pass through a sieve with openings that are approximately 44 thousandths of an inch in diameter. Silicon is a chemical element and is a hard, brittle, metallic-gray solid that is highly resistant to chemical attack and has a high melting point. Silicon is the second most abundant element in the Earth’s crust and is found in a variety of minerals.

Application

Silicon can be used as anode material in lithium-ion batteries.

It can be used to fabricate Al₂O₃-C refractories. The silicon powder generates β-Sialon whiskers which imparts high-temperature strength, slag resistance and thermal shock resistance of the refractories.

It can be incorporated into high-densitypolyethylene (HDPE) polymer composites. The addition of silicon powder enhancesthermal stability and thermal conductivity of composites.

Información de seguridad

• pictograms: GHS02
• signalword: Warning
• hcodes: H228
• pcodes: P210 - P240 - P241 - P280 - P370 + P378
• Hazard Classifications: Flam. Sol. 2
• Storage Class: 4.1B - Flammable solid hazardous materials
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)