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Substance Name: Plaster of Paris
RN: 26499-65-0
InChIKey: ZOMBKNNSYQHRCA-UHFFFAOYSA-J

Classification Code

  • TWA (15 mg/m3 total dust; 5 mg/m3 respirable fracton)

Molecular Formulas

  • H2-O4-S.Ca
  • O4-S.Ca.1/2H2-O

Molecular Weight

  • 290.2948
 
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Names and Synonyms

Synonyms

  • AI3-01697
  • Crystacal
  • Densite
  • Densite (gypsum)
  • FGR
  • Gypsum hemihydrate
  • Hemihydrate gypsum
  • TA 20

Systematic Names

  • Plaster of Paris
  • Plaster of Paris (Ca(SO4).1/2H2O)
  • Sulfuric acid, calcium salt (Plaster of Paris)

Superlist Names

  • Plaster of Paris
  • Plaster of Paris, respirable fraction
  • Plaster of Paris, total dust

Registry Numbers

CAS Registry Number

  • 26499-65-0

System Generated Number

  • 0026499650

Molecular Formulas

Molecular Formulas

  • H2-O4-S.Ca
  • O4-S.Ca.1/2H2-O

Molecular Formula Fragments

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

Structure Descriptors

InChI

InChI=1S/2Ca.2H2O4S.H2O/c;;2*1-5(2,3)4;/h;;2*(H2,1,2,3,4);1H2/q2*+2;;;/p-4

InChIKey

ZOMBKNNSYQHRCA-UHFFFAOYSA-J

Smiles

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