Silicon dioxide
 Pure silicon dioxide
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| Names | |
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| IUPAC name
Silicon dioxide
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| Ither names
Quartz
Silica |
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| Identifiers | |
| Jmol-3D images | Image |
| ChEBI | CHEBI:30563  |
| ChemSpider | 22683 |
| ECHA InfoCard | 100.028.678 |
| EC Nummer | 231-545-4 |
| E nummer | E551 (acidity regulators, ...) |
| Gmelin Reference | 200274 |
| KEGG | C16459  |
| MeSH | Silicon+dioxide |
| RTECS nummer | VV7565000 |
| UNII | ETJ7Z6XBU4 |
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| 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 S |
42 J·mol−1·K−1[1] |
| Std enthalpy o formation ΔfH |
−911 kJ·mol−1[1] |
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Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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| 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 ensaumples 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]
- ↑ 1.0 1.1 Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A22. ISBN 0-618-94690-X.
- ↑ Iler, R. K. (1979). The Chemistry of Silica. Plenum Press. ISBN 0-471-02404-X.
