634867

Siliziumdioxid

single crystal substrate, optical grade, 99.99% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm

• Synonym(e): Cristobalit, Kieselgel, Quarz, Seesand
• Lineare Formel: SiO₂
• CAS-Nummer: 60676-86-0
• Molekulargewicht: 60.08
• EG-Nummer: 262-373-8
• MDL-Nummer: MFCD00011232
• UNSPSC-Code: 12352303
• PubChem Substanz-ID: 24882697
• NACRES: NA.23

Eigenschaften

• Qualität: optical grade
• Assay: 99.99% trace metals basis
• Form: solid
• Härte: 7.0 mohs
• L × B × Dicke: 10 mm × 10 mm × 0.5 mm
• Brechungsindex: n20/D 1.544 (lit.)
• mp (Schmelzpunkt): 1610 °C (lit.)
• Übergangstemp.: T_m 573.1 °C (phase change)
• Dichte: 2.6 g/mL at 25 °C (lit.); 2.684 g/mL
• SMILES String: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Beschreibung

Anwendung

SiO₂ is majorly used as a substrate material with excellent thermo-mechanical properties in a variety of applications which include:

• vapour deposition
• phase deposition
• atomic force microscopy probes(AFM)
• spin coating
• electronic based devices

Leistungsmerkmale und Vorteile

An excellent substrate for microwave filters for applications in the wireless communication arena.

Physikalische Form

Crystalline, hexagonal (a = 4.914 Å, c = 5.405 Å)

Sonstige Hinweise

specific heat = 0.18 cal/g; thermoelectric constant = 1200μV/°C @ 300 °C; thermal conductivity = 0.0033 cal/cm°C; themal expansion (x10^-6) = α₁₁: 13.71, α₃₃: 7.48; Q value = 1.8 × 10⁶ min; acoustic velocity, SAW = 3160 m/sec; frequency constant, BAW = 1661 kHz/mm; piezoelectric coupling = K² BAW: 0.65%, SAW: 0.14%

Sicherheitshinweise

• Lagerklassenschlüssel: 13 - Non Combustible Solids
• WGK: nwg
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves