Silicon dioxide
| Silicon dioxide | |
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 Pure silicon dioxide
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Silicon dioxide |
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Ither names
Quartz Silica |
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| Identifiers | |
| CAS number | 7631-86-9  |
| PubChem | 24261 |
| ChemSpider | 22683 |
| UNII | ETJ7Z6XBU4 |
| EC nummer | 231-545-4 |
| KEGG | C16459  |
| MeSH | Silicon+dioxide |
| ChEBI | CHEBI:30563 |
| RTECS nummer | VV7565000 |
| Gmelin Reference | 200274 |
| Jmol-3D images | Image 1 |
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| 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 |
| Relatit compoonds | Silicon monoxide |
| Thermochemistry | |
| Std enthalpy o formation ΔfH |
−911 kJ·mol−1[1] |
| Staundart molar entropy S |
42 J·mol−1·K−1[1] |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 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 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]
- ↑ 1.0 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.
