Chemicals and Drugs

Talc

Finely powdered native hydrous magnesium silicate. It is used as a dusting powder, either alone or with starch or boric acid, for medicinal and toilet preparations. It is also an excipient and filler for pills, tablets, and for dusting tablet molds. (From Merck Index, 11th ed)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Finely powdered native hydrous magnesium silicate. It is used as a dusting powder, either alone or with starch or boric acid, for medicinal and toilet preparations. It is also an excipient and filler for pills, tablets, and for dusting tablet molds. (From Merck Index, 11th ed)

Chemical Identity

Chemical Information

Molecular Formula
H2Mg3O12Si4
Molecular Weight
379.27 g/mol
IUPAC Name
trimagnesium;decakis(oxygen(2-));tetrakis(silicon(4+));dihydroxide
InChIKey
JACYTZHPXAPJCY-UHFFFAOYSA-L
SMILES
[OH-].[OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mg+2].[Mg+2].[Mg+2].[Si+4].[Si+4].[Si+4].[Si+4]
MeSH Unique ID
D013627
Source
PubChem CID 122173976

MeSH Record

Classification

Broader headings

Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

1 entry terms
  • Talcum Powder

MeSH Record

Aspects Covered

25 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analogs & derivatives, 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

talc granuloma = TALC /adv eff + GRANULOMA, FOREIGN-BODY /etiol (not /chem ind)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Talc. Medical Subject Headings (MeSH). 2026. Unique ID D013627. http://id.nlm.nih.gov/mesh/2026/D013627
  2. Talc. In: Wikidata. https://www.wikidata.org/wiki/Q108584660
  3. Talc. In: PubChem Compound. CID 122173976. https://pubchem.ncbi.nlm.nih.gov/compound/122173976