31624
Silicon dioxide
acid washed and calcined, Analytical Reagent
Synonym(s):
Sand, white quartz, Quartz, Silicon dioxide
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About This Item
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
SB.52
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form
granular
quality
acid washed and calcined, Analytical Reagent
impurities
≤0.01% in HCL soluble iron (Fe)
≤0.2% soluble in HCl
loss
≤0.10% loss on ignition, 900 °C
granulation
0.1-0.3 mm, coeff var ≥96%
anion traces
chloride (Cl-): ≤50 mg/kg
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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General description
Study of silicon-silicon dioxide structure at liquid nitrogen temperature by electron spin resonance spectra has been investigated. Diffusion coefficient and solubilities of several metals (Ag, Cu, Au, Pd, and Ti) in silicon dioxide have been discussed. Microcontact printing of self-assembled monolayers (SAMs) of alkylsiloxanes on the surface of silicon dioxide has been reported. Separation and characterization of silicon dioxide (SiO2) nanostructures in dietary supplements marketed in products specifically targeted for women has been proposed.
Application
Silicon dioxide may be employed as insulating layer on top of the silicon in the fabrication of gold electrode, used for flow injection amperometric detection of organophosphorus (OP) nerve agents.
Storage Class Code
13 - Non Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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A flow-injection system with an organophosphorus-hydrolase (OPH)-biosensor detector has been developed and characterized for the rapid detection of organophosphorus (OP) nerve agents. The enzyme was immobilized onto a thin-film gold detector through a cystamine-glutaraldehyde coupling. Factors influencing the performance were
Microcontact printing of octadecylsiloxane on the surface of silicon dioxide and its application in microfabrication.
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Journal of the American Chemical Society, 117(37), 9576-9577 (1995)
Diffusion of metals in silicon dioxide.
McBrayer JD, et al.
Journal of the Electrochemical Society, 133(6), 1242-1246 (1986)
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