Chemicals and Drugs

Nitric Acid

Nitric acid (HNO3). A colorless liquid that is used in the manufacture of inorganic and organic nitrates and nitro compounds for fertilizers, dye intermediates, explosives, and many different organic chemicals. Continued exposure to vapor may cause chronic bronchitis; chemical pneumonitis may occur. (From Merck Index, 11th ed)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Nitric acid (HNO3). A colorless liquid that is used in the manufacture of inorganic and organic nitrates and nitro compounds for fertilizers, dye intermediates, explosives, and many different organic chemicals. Continued exposure to vapor may cause chronic bronchitis; chemical pneumonitis may occur. (From Merck Index, 11th ed)

Chemical Identity

Chemical Information

Molecular Formula
HNO3
Molecular Weight
63.013 g/mol
CAS Registry No.
7697-37-2
IUPAC Name
nitric acid
InChIKey
GRYLNZFGIOXLOG-UHFFFAOYSA-N
SMILES
[N+](=O)(O)[O-]
MeSH Unique ID
D017942
Source
PubChem CID 944

MeSH Record

Classification

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Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

1 entry terms
  • Acid, Nitric

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

do not confuse with NITROUS ACID

MeSH Record

History Note

94; was NITRIC ACID (NM) 1974-93

MeSH Record

Previous Indexing

  • Acids (1974-1979)
  • Nitrates (1980-1993)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Nitric Acid. Medical Subject Headings (MeSH). 2026. Unique ID D017942. http://id.nlm.nih.gov/mesh/2026/D017942
  2. Nitric Acid. In: Wikipedia. https://en.wikipedia.org/wiki/Nitric_acid
  3. Nitric Acid. In: Wikidata. https://www.wikidata.org/wiki/Q83320
  4. Nitric Acid. In: PubChem Compound. CID 944. https://pubchem.ncbi.nlm.nih.gov/compound/944