Silicon dioxide

Frae Wikipedia
Lowp tae: navigation, rake
Silicon dioxide

Pure silicon dioxide
Identifiers
CAS number 7631-86-9 YesY
PubChem 24261
ChemSpider 22683 YesY
UNII ETJ7Z6XBU4 YesY
EC nummer 231-545-4
KEGG C16459 N
MeSH Silicon+dioxide
ChEBI CHEBI:30563 YesY
RTECS nummer VV7565000
Gmelin Reference 200274
Jmol-3D images Image 1
Properties
Molecular formula SiO2
Molar mass 60.08 g/mol
Appearance Transparent crystals
Density 2.648 g·cm−3
Meltin pynt

1600-1725 °C, 1873-1998 K, 2912-3137 °F

Boilin pynt

2230 °C, 2503 K, 4046 °F

Related compounds
Relatit diones Carbon dioxide

Germanium dioxide
Lead dioxide
Tin dioxide

Relatit compoonds Silicon monoxide

Silicon sulfide

Thermochemistry
Std enthalpy o
formation
ΔfHo298
−911 kJ·mol−1[1]
Staundart molar
entropy
So298
42 J·mol−1·K−1[1]
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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.