Silicon dioxide

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Silicon dioxide
Sample of silicon dioxide.jpg
Pure silicon dioxide
DuneBlanche.jpg
Names
IUPAC name
Silicon dioxide
Ither names
Quartz

Silica
Silicic oxide
Silicon(IV) oxide

Crystalline silica
Identifiers
Jmol-3D images Image
ChEBI CHEBI:30563 YesY
ChemSpider 22683 YesY
ECHA InfoCard 100.028.678
EC Nummer 231-545-4
E nummer E551 (acidity regulators, ...)
Gmelin Reference 200274
KEGG C16459 N
MeSH Silicon+dioxide
RTECS nummer VV7565000
UNII ETJ7Z6XBU4 YesY
Properties
SiO2
Molar mass 60.08 g/mol
Appearance Transparent crystals
Density 2.648 g·cm−3
Bylin pynt 2,230 °C (4,050 °F; 2,500 K)
Relatit compoonds
Thermochemistry
Staundart molar
entropy
So298
42 J·mol−1·K−1[1]
Std enthalpy o
formation
ΔfHo298
−911 kJ·mol−1[1]
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
YesY verify (whit is YesYN ?)
Infobox references

Silicon dioxide, an aa kent as silica (frae the Laitin silex), is a chemical compoond that is a dioxide o silicon wi the chemical formula SiO2. It haes been kent syne auncient times. Silica is maist commonly foond in naitur as quartz, as well as in various livin organisms,[2] Silica is ane o the maist complex an maist abundant faimilies o materials, existin baith as several minerals an bein produced synthetically. Notable examples include fused quartz, crystal, fumed silica, silica gel, an aerogels. Applications range frae structural materials tae microelectronics tae components uised in the fuid industry.

References[eedit | eedit soorce]

  1. 1.0 1.1 Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A22. ISBN 0-618-94690-X. 
  2. Iler, R. K. (1979). The Chemistry of Silica. Plenum Press. ISBN 0-471-02404-X.