Silicon dioxide

CAS 7631-86-9  ·  O2Si  ·  MW 60.084 g/mol

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3D model Silica, CAS 7631-86-9, molecular formula O2Si, molar mass 60.084 g/mol
About Silicon dioxide

Silicon dioxide is a chemical compound registered under number CAS 7631-86-9, with the molecular formula O2Si, and a molar mass of 60.084 g/mol.

The molecule contains 3 atoms connected by 2 chemical bonds. The full systematic IUPAC name of this compound is dioxosilane. The interactive 3D model above lets you view the spatial arrangement of the atoms — you can rotate it with the mouse, zoom with the scroll wheel, and switch between skeletal / Ball & Stick / Space Fill visualization modes.

In terms of physicochemical properties, polar surface area PSA = 34.1 Ų, 0 donors and 2 hydrogen bond acceptors. These parameters are key when assessing bioavailability and interaction with biomolecules.

Chemical data for this compound comes from PubChem (NIH NLM NCBI), one of the world's largest chemical databases. All information is updated automatically and enriched with GHS hazard statement translations compliant with the CLP Regulation (EC 1272/2008). The widget above may be used for educational, research and commercial purposes.

Physicochemical properties
Molecular formulaO2Si
Molar mass60.084 g/mol
IUPACdioxosilane
SMILESO=[Si]=O
InChIKeyVYPSYNLAJGMNEJ-UHFFFAOYSA-N
logP (XLogP3)—
PSA34.1 Ų
HBD / HBA0 / 2
PubChem CIDCID 24261 ↗
GHS safety

Signal word: Danger

GHS07
GHS07
GHS08
GHS08

H319 — Causes serious eye irritation

H335 — May cause respiratory irritation

H350 — May cause cancer

H372 — Causes damage to organs through prolonged or repeated exposure

H341 — Suspected of causing genetic defects

H320 — Causes eye irritation

Scientific literature

Related literature

6 articles · 4 open access · Sources: PubMed, OpenAlex, Semantic Scholar

Filters:Export:📄 BibTeX📑 RIS📋 EndNote🔧 CSL-JSON

📈 Publication timeline (number of articles: 6)

2018: number of articles 120182026: number of articles 52026

Bar height = number of articles in a given year. Hover over a bar to see details.

Data from PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary generated by Semantic Scholar TLDR. Articles marked with require paid access.

Synonyms
SILICON DIOXIDE · Silica · Dioxosilane · 7631-86-9 · Silicic anhydride · Diatomaceous silica · Wessalon · Zorbax sil · Silica, amorphous · Silica, colloidal · Sillikolloid · Acticel · Carplex · Extrusil · Porasil
Data sources
Related molecules
📜 License & provenancePREDICTED MODEL · NOT VERIFIEDMolGod_License_1
PREDICTED MODEL — NOT VERIFIED
computed by MolGod Scientific · experimental feature (beta) · may contain errors

No source 3-D conformer was available to MolGod for this substance. MolGod Scientific computed this geometry from the structural formula with RDKit 2026.03.6 (ETKDGv3 conformer generation, UFF force-field optimisation; lowest-energy converged conformer of a fixed-seed set). It is not a measured structure, it does not come from PubChem, and it has not been compared with experimental data. It shows one possible conformation.

Methods and references
  1. RDKit: Open-source cheminformatics, version 2026.03.6. Zenodo. doi:10.5281/zenodo.22140358 (all versions: doi:10.5281/zenodo.591637)
  2. Riniker S, Landrum GA. Better Informed Distance Geometry: Using What We Know To Improve Conformation Generation. J. Chem. Inf. Model. 2015, 55, 2562-2574. doi:10.1021/acs.jcim.5b00654
  3. Wang S, Witek J, Landrum GA, Riniker S. Improving Conformer Generation for Small Rings and Macrocycles Based on Distance Geometry and Experimental Torsional-Angle Preferences. J. Chem. Inf. Model. 2020, 60, 2044-2058. doi:10.1021/acs.jcim.0c00025
  4. Rappe AK, Casewit CJ, Colwell KS, Goddard WA III, Skiff WM. UFF, a full periodic table force field for molecular mechanics and molecular dynamics simulations. J. Am. Chem. Soc. 1992, 114, 10024-10035. doi:10.1021/ja00051a040
  5. Heller SR, McNaught A, Pletnev I, Stein S, Tchekhovskoi D. InChI, the IUPAC International Chemical Identifier. J. Cheminform. 2015, 7, 23. doi:10.1186/s13321-015-0068-4
  6. Kim S, Chen J, Cheng T, et al. PubChem 2025 update. Nucleic Acids Res. 2025, 53, D1516-D1525. doi:10.1093/nar/gkae1059 Compound record: https://pubchem.ncbi.nlm.nih.gov/compound/24261
  7. Bolton EE, Kim S, Bryant SH. PubChem3D: Conformer generation. J. Cheminform. 2011, 3, 4. doi:10.1186/1758-2946-3-4 (cited for contrast: no source 3-D conformer was available to MolGod for this record)
silicon dioxide (CAS 7631-86-9), O2Si - 3D ball-and-stick molecular model, engraved element symbols (O Si), MolGod STL previewDownload image

MG-STL-7631-86-9-ENGRAVED · 64,918 △ · 3 MB · SHA-256 4056347d16ff7ce5

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silicon dioxide (CAS 7631-86-9), O2Si - 3D ball-and-stick molecular model, MolGod STL previewDownload image

MG-STL-7631-86-9-NORMAL · 1,344 △ · 66 KB · SHA-256 b20feb659a25937e

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Model
silicon dioxide · 7631-86-9
InChIKey
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
License
CC BY-SA 4.0 International (source rights undetermined — not yet granted)
Attribution
MolGod Scientific — silicon dioxide (CAS 7631-86-9)
License & provenance record
silicon dioxide (CAS 7631-86-9) →
MolGod molecule record
silicon dioxide →
Source data
PubChem CID 24261 ↗
Model information
STL generated by MolGod · MolGod STL Exporter build 48804cd20b0d · generated 2026-10-14
SHA-256 (STL)
b20feb659a25937ea61c12c4b6b5a9b99c9d1d4670ff7841062ac582d79aae5c
MD5 (STL)
75609acb06074e4d60e23bc58ba36ef0
Model identifier
MG-STL-7631-86-9
Transformation
MolGod Scientific ball-and-stick mesh
Changes
PREDICTED geometry computed by MolGod Scientific (RDKit), NOT verified; rendered as a triangulated mesh.
Wikimedia Commons
not published yet

This license applies to the MolGod-created STL mesh, not automatically to third-party source material.

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