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Phthalic anhydride

CAS Registry Number®

85-44-9

CAS Name

Phthalic anhydride

Molecular Formula

C8H4O3

Molecular Mass

148.12

Cite this Page

Phthalic anhydride.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=85-44-9 (retrieved 2024-11-21) (CAS RN: 85-44-9).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    295 °C

  • Melting Point (1)

    130.8 °C

  • Density (2)

    1.53 g/cm³

Source(s)

  • (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)
  • (2) International Chemical Safety Cards data were obtained from the National Institute for Occupational Safety and Health (US)

Other Names and Identifiers

InChI

InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H

InChIKey

InChIKey=LGRFSURHDFAFJT-UHFFFAOYSA-N

SMILES

O=C1C=2C(C(=O)O1)=CC=CC2

Canonical SMILES

O=C1OC(=O)C=2C=CC=CC12

Other Names for this Substance

  • 1,3-Isobenzofurandione
  • Phthalic anhydride
  • ESEN
  • Phthalandione
  • 1,3-Phthalandione

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Deleted or Replaced CAS Registry Numbers

39363-63-8

CAS INSIGHTSTM
Targeted protein degrader structure, illustration