Chemicals and Drugs

Silicon Dioxide

Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.

Chemical Identity

Chemical Information

Molecular Formula
O2Si
Molecular Weight
60.084 g/mol
CAS Registry No.
7631-86-9
IUPAC Name
dioxosilane
InChIKey
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
SMILES
O=[Si]=O
MeSH Unique ID
D012822
Source
PubChem CID 24261

MeSH Record

Classification

Related Concepts

Knowledge Graph

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MeSH Record

Synonyms

11 entry terms
  • Cristobalite
  • Silica
  • Tridymite
  • Dioxide, Silicon
  • Aerosil
  • Aerosil 380
  • Quso G-32
  • Quso G32
  • 380, Aerosil
  • G32, Quso
  • Quso G 32

MeSH Record

Aspects Covered

24 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, antagonists & inhibitors, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, economics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.

MeSH Record

Indexing Annotation

note entry term: do not confuse with SILICON; TN 172: differentiation among silic- terms; see MeSH definition for names of common forms of silicon dioxide

MeSH Record

History Note

94; was SILICA 1963-93

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Silicon Dioxide. Medical Subject Headings (MeSH). 2026. Unique ID D012822. http://id.nlm.nih.gov/mesh/2026/D012822
  2. Silicon Dioxide. In: Wikipedia. https://en.wikipedia.org/wiki/Silicon_dioxide
  3. Silicon Dioxide. In: Wikidata. https://www.wikidata.org/wiki/Q116269
  4. Silicon Dioxide. In: PubChem Compound. CID 24261. https://pubchem.ncbi.nlm.nih.gov/compound/24261