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Sigma-Aldrich

Silicon dioxide

acid washed and calcined, Analytical Reagent

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Synonym(s):
Sand, white quartz, Quartz, Silicon dioxide
Linear Formula:
SiO2
CAS Number:
14808-60-7
Molecular Weight:
60.08
EC Number:
238-878-4
MDL number:
MFCD00011232
UNSPSC Code:
12352300
PubChem Substance ID:
57648587
NACRES:
SB.52

form

granular

Quality Level

100

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Joseph Wang et al.
Biosensors & bioelectronics, 18(2-3), 255-260 (2002-12-18)
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.
Xia Y, et al.
Journal of the American Chemical Society, 117(37), 9576-9577 (1995)
Study of silicon-silicon dioxide structure by electron spin resonance I.
Nishi Y.
Jpn J. App. Phys., Part I, 10(1), 52-52 (1971)
Jin-Hee Lim et al.
Journal of agricultural and food chemistry, 63(12), 3144-3152 (2015-03-05)
Nanomaterials are beginning to enter our daily lives through various consumer products as the result of technology commercialization. The development of methodologies to detect the presence of nanomaterials in consumer products is an essential element in understanding our exposure. In
Diffusion of metals in silicon dioxide.
McBrayer JD, et al.
Journal of the Electrochemical Society, 133(6), 1242-1246 (1986)
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