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Substance Name: Calcium sulfate dihydrate
RN: 10101-41-4
UNII: 4846Q921YM
InChIKey: PASHVRUKOFIRIK-UHFFFAOYSA-L

Note

  • 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.

Molecular Formula

  • O4-S.Ca.2H2-O

Molecular Weight

  • 172.17
 

Classification Codes

  • Agricultural Chemical
  • Unspecified / Unclassified Pesticide
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Names and Synonyms

Name of Substance

  • Calcium sulfate dihydrate

Synonyms

  • Annaline
  • C.I. 77231
  • Calcium sulfate dihydrate
  • Calcium sulfate dihydrate (CaSO4.2H2O
  • Compactrol
  • Light spar
  • Magnesia White
  • Mineral White
  • Native calcium sulfate
  • Precipitated calcium sulfate
  • Satin spar
  • Satinite
  • Sulfuric acid, calcium(2+) salt, dihydrate
  • Terra alba
  • UNII-4846Q921YM

Systematic Names

  • Calcium(II) sulfate, dihydrate (1:1:2)
  • Sulfuric acid, calcium salt (1:1), dihydrate

Superlist Names

  • Calcium sulfate dihydrate
  • Calcium sulfate, dihydrate

Registry Numbers

CAS Registry Number

  • 10101-41-4

FDA UNII

  • 4846Q921YM

Related Registry Number

  • 7778-18-9 (Parent)

System Generated Number

  • 0010101414

Molecular Formulas

Molecular Formula

  • O4-S.Ca.2H2-O

Molecular Formula Fragments

  • Ca
  • COMPONENT
  • H2-O
  • O4-S

Structure Descriptors

InChI

1S/Ca.H2O4S.2H2O/c;1-5(2,3)4;;/h;(H2,1,2,3,4);2*1H2/q+2;;;/p-2

InChIKey

PASHVRUKOFIRIK-UHFFFAOYSA-L

Smiles

S(=O)(=O)([O-])[O-].O.O.[Ca+2]