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Silicon dioxide

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Silicon dioxide

Molecular formula: O2Si CAS# 7631-86-9
Categories: Oxide
PubChem CID: 24261 | ChemSpider ID: 22683 | CHEBI:30563
Names
English:
Cristobalite
Crystalline silica
Diatomaceous earth
Diatomaceous silica
EINECS:231-545-4
Infusorial earth
Quartz
Sand
Silicic anhydride
Silicic oxide
Silicon dioxide(IUPAC) [Wiki]
Silicon(IV) oxide
dioxosilane(IUPAC)
silica

Variants of the formula:

SiO2
O=Si=O
O//Si//O
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent

Reactions in which Silicon dioxide is involved

  • {X} + O2 = {X}O2 , where X = S Se C Si
  • {M}2O + {X}O2 -> {M}2{X}O3 , where M = Na K Li Rb Cs; X = C S Si
  • SiO2 + 4HF "250-400^oC"--> SiF4 + 2H2O
  • SiO2 + 6HF -> H2[SiF6] + 2H2O
  • SiO2 + 4NaOH -> Na4SiO4 + 2H2O