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634867

Sigma-Aldrich

Silicon dioxide

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

Synonym(s):

Cristobalite, Quartz, Sand, Silica

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About This Item

Linear Formula:
SiO2
CAS Number:
60676-86-0
Molecular Weight:
60.08
EC Number:
262-373-8
MDL number:
MFCD00011232
UNSPSC Code:
12352303
PubChem Substance ID:
24882697
NACRES:
NA.23

Key Documents

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grade

optical grade

Quality Level

100

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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Certificates of Analysis (COA)

Lot/Batch Number
BCCD6553
BCCC0430
BCCB3022
BCBX5076
BCBR6518V

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Electrical and optical properties of ZnO transparent conducting films by the sol-gel method.
Lee J, et al.
Journal of Crystal Growth, 247(1-2), 119-125 (2003)
Growth model of bamboo-shaped carbon nanotubes by thermal chemical vapor deposition.
Lee CJ and Park J
Applied Physics Letters, 77(21), 3397-3399 (2000)
Measurement of the adhesion force between carbon nanotubes and a silicon dioxide substrate.
Whittaker JD, et al.
Nano Letters, 6(5), 953-957 (2006)
Oxygen-aided synthesis of polycrystalline graphene on silicon dioxide substrates.
Chen J, et al.
Journal of the American Chemical Society, 133(44), 17548-17551 (2011)
The effect of calcination temperature on the surface microstructure and photocatalytic activity of TiO2 thin films prepared by liquid phase deposition.
Yu J, et al.
The Journal of Physical Chemistry B, 107(50), 13871-13879 (2003)
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