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About This Item
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
EC Number:
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.23
grade
optical grade
assay
99.99% trace metals basis
form
solid
hardness
7.0 mohs
L × W × thickness
10 mm × 10 mm × 0.5 mm
refractive index
n20/D 1.544 (lit.)
mp
1610 °C (lit.)
transition temp
Tm 573.1 °C (phase change)
density
2.6 g/mL at 25 °C (lit.)
2.684 g/mL
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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Application
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
Features and Benefits
An excellent substrate for microwave filters for applications in the wireless communication arena.
Physical form
Crystalline, hexagonal (a = 4.914 Å, c = 5.405 Å)
Other Notes
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%
Storage Class
13 - Non Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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