Silicon dioxide

Basic Information

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CAS Number

68611-44-9

Molecular Formula

O2Si

Molecular Weight

60.08 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Density

0.18 g/cm 3 (loose weight)

SMILES

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[Si](=O)=O

InChI

1S/O2Si/c1-3-2

InChIKey

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

LogP

-0.6184000000000001

Topological Polar Surface Area

34.14 Å²

Hydrogen Bond Donor/Acceptor

0 / 2

Complexity

18.3

Synonyms & References

English

Silane, dichlorodimethyl-, reaction products with silica
Silane, dichlorodimethyl-, reaction products with silica
Silica
SILICON DIOXIDE
Quartz
Dioxosilane
Cristobalite
Tridymite
Diatomaceous earth
Silicic anhydride
Aerosil
Sand
Infusorial earth
KIESELGUHR
Wessalon
Dicalite
Nyacol
Glass
Ludox
Zorbax sil
Silica, amorphous
Crystalline silica
Diatomaceous silica
Cab-O-sil
Silicondioxide
Crystoballite
Christensenite
Silicon(IV) oxide
QUARTZ (SIO2)
Amorphous silica
Sillikolloid

FAQ

What regulatory guidelines apply to silicon dioxide (CAS: 68611-44-9)?

Silicon dioxide is classified according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) as not hazardous to health, environment, or safety. In Europe, it is regulated under REACH for certain applications. The Food and Drug Administration (FDA) and Environmental Protection Agency (EPA) do not classify silicon dioxide as a hazardous substance, but proper handling and disposal are still required to comply with local regulations.

Are there alternatives to silicon dioxide (CAS: 68611-44-9) in synthesis?

Silicon dioxide is often used as an inert support or catalyst in synthesis. Alternatives include other oxides like alumina or silica-alumina, or more reactive materials like metal oxides. In specific applications, silica gel, zeolites, or carbon materials might be considered as substitutes, depending on the intended use.

What is the market or research trend for silicon dioxide (CAS: 68611-44-9)?

The market for silicon dioxide continues to grow due to its wide range of applications in electronics, construction, and consumer goods. Research trends include its use in nanotechnology, biosensors, and as a reinforcing agent in rubber. Additionally, there is increasing interest in its environmental and biomedical applications, driven by sustainability and biocompatibility concerns.

How should waste containing silicon dioxide (CAS: 68611-44-9) be handled?

Waste containing silicon dioxide can usually be disposed of as non-hazardous solid waste. For large quantities or specific applications, it should be collected in a closed container and disposed of at an authorized facility. Environmental protection measures include minimizing dust generation, proper packaging to prevent leaks, and adherence to local waste management regulations. In cases of contamination, appropriate decontamination procedures should be followed before disposal.