Chemicals and Drugs

Calcium Sulfate

A calcium salt that is used for a variety of purposes including: building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. It exists in various forms and states of hydration. Plaster of Paris is a mixture of powdered and heat-treated gypsum.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A calcium salt that is used for a variety of purposes including: building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. It exists in various forms and states of hydration. Plaster of Paris is a mixture of powdered and heat-treated gypsum.

Chemical Identity

Chemical Information

Molecular Formula
CaO4S
Molecular Weight
136.14 g/mol
CAS Registry No.
7778-18-9
IUPAC Name
calcium sulfate
InChIKey
OSGAYBCDTDRGGQ-UHFFFAOYSA-L
SMILES
[O-]S(=O)(=O)[O-].[Ca+2]
MeSH Unique ID
D002133
Source
PubChem CID 24497

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

20 entry terms
  • Calcium Sulphate
  • Alabaster
  • Anhydrous Sulfate of Lime
  • Artificial Dental Stone
  • Calcium Sulfate (1:1), Dihydrate
  • Calcium Sulfate (1:1), Hemihydrate
  • Calcium Sulfate (2:1)
  • Calcium Sulfate Dihydrate
  • Calcium Sulfate, Anhydrous
  • Calcium Sulfate, Dihydrate
  • Calcium Sulfate, Hemihydrate
  • Dental Gypsum
  • Dental Stone, Artificial
  • Drierite
  • Gypsite
  • Gypsum
  • Gypsum, Dental
  • Karstenite
  • Plaster of Paris
  • Stone, Artificial Dental

MeSH Record

Aspects Covered

19 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analogs & derivatives, analysis, chemical synthesis, chemistry, classification, economics, history, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity.

MeSH Record

History Note

80; PLASTER OF PARIS was heading 1963-79

MeSH Hierarchy

Tree Numbers

  1. D01w.146.375w
  2. D01w.578w.215w
  3. D01w.875w.800.800.850.125w

AMA Style

References

  1. National Library of Medicine. Calcium Sulfate. Medical Subject Headings (MeSH). 2026. Unique ID D002133. http://id.nlm.nih.gov/mesh/2026/D002133
  2. Calcium Sulfate. In: Wikipedia. https://en.wikipedia.org/wiki/Calcium_sulfate
  3. Calcium Sulfate. In: Wikidata. https://www.wikidata.org/wiki/Q407258
  4. Calcium Sulfate. In: PubChem Compound. CID 24497. https://pubchem.ncbi.nlm.nih.gov/compound/24497