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):
Quartz, Silica, Cristobalite, Sand
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

grade

optical grade

assay

99.99% trace metals basis

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

Packaging

5 ea in padded box

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%

Pictograms

Exclamation markHealth hazard

Signal Word

Warning

Hazard Statements

Precautionary Statements

Target Organs

Lungs, Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Exciton diffusion measurements in poly (3-hexylthiophene).
Shaw PE, et al.
Advanced Materials, 20(18), 3516-3520 (2008)
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)
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)
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