Chemicals and Drugs

Sulfur Dioxide

A highly toxic, colorless, nonflammable gas. It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A highly toxic, colorless, nonflammable gas. It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant.

Chemical Identity

Chemical Information

Molecular Formula
O2S
Molecular Weight
64.07 g/mol
CAS Registry No.
7446-09-5
IUPAC Name
sulfur dioxide
InChIKey
RAHZWNYVWXNFOC-UHFFFAOYSA-N
SMILES
O=S=O
MeSH Unique ID
D013458
Source
PubChem CID 1119

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

1 entry terms
  • Sulfurous Anhydride

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

History Note

66(64)

MeSH Hierarchy

Tree Numbers

  1. D01w.362w.810w
  2. D01w.650w.550w.850w.925w
  3. D01w.875w.825w.925w

AMA Style

References

  1. National Library of Medicine. Sulfur Dioxide. Medical Subject Headings (MeSH). 2026. Unique ID D013458. http://id.nlm.nih.gov/mesh/2026/D013458
  2. Sulfur Dioxide. In: Wikipedia. https://en.wikipedia.org/wiki/Sulfur_dioxide
  3. Sulfur Dioxide. In: Wikidata. https://www.wikidata.org/wiki/Q5282
  4. Sulfur Dioxide. In: PubChem Compound. CID 1119. https://pubchem.ncbi.nlm.nih.gov/compound/1119