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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Identification

Chemical structure
Display Name:
Phthalic anhydride
EC Number:
201-607-5
EC Name:
Phthalic anhydride
CAS Number:
85-44-9
Molecular formula:
C8H4O3
IUPAC Name:
1,3-dihydro-2-benzofuran-1,3-dione

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • 201-607-5
  • 85-44-9
  • 1,2-BENZENE DICARBOXYLIC ACID ANHYDRIDE
  • 1,2-Benzenecarboxylic anhydride
  • 1,2-Benzenedicarboxylic Anhydride
  • 1,2-Benzenedicarboxylic acid anhydride
  • 1,2-Benzenedicarboxylic anhydride
  • 1,3 Phthalandione
  • 1,3-DIOXOPHTHALANE
  • 1,3-Dihydro-1,3-dioxoisobenzofurane
  • 1,3-Dioxophthalane
  • 1,3-ISOBENZOFURANDIONE
  • 1,3-Isobenzofurandione
  • 1,3-Isobenzofurandione
  • 1,3-Isobenzofurandione (9CI)
  • 1,3-Phthalandione
  • 1,3-dihydro-1,3-dioxo-isobenzofuran
  • 2-Benzofuran-1,3-dione
  • Araldite HT 901
  • Bezwodnik ftalowy
  • Bezwodnik ftalowy ciekły
  • ESEN
  • HT 901
  • Isobenzofuran, 1,3-dihydro-1,3-dioxo-
  • Isobenzofuran-1,3-dione
  • Isobenzofuran-1,3-dione
  • Isobenzofurane, 1,3-dihydro-1,3-dioxo-
  • Isobenzofurane, 1,3-dihydro-1,3dioxo-
  • PA
  • PAN
  • PSA
  • Phthalandione
  • Phthalanhydride
  • Phthalic Anhydride
  • Phthalic acid anhydride
  • Phthalic anhydride
  • Phthalic anhydride (8CI)
  • Phthalic anhydride liquid
  • Retarder AK
  • Retarder ESEN
  • Retarder PD
  • Sconoc 7
  • TGL 6525
  • Vulkalent B/C
  • ftalanhydrid
  • 1,3-dihydro-2-benzofuran-1,3-dione
    (IUPAC name )

    Compositions

    Boundary Composition(s) open all close all

    State Form:
    other: solid: cristalline


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: solid:cristalline


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione

    Legal Entity Composition(s) open all close all

    State Form:
    other: solid: crystalline


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: solid flakes


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: Solid


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: solid: cristalline


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: Solid


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: Solid: flakes


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: solid: flakes


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    other: solid: crystalline


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Phthalic anhydride
    EC Number:
    201-607-5
    EC Name:
    Phthalic anhydride
    CAS Number:
    85-44-9
    Molecular formula:
    C8H4O3
    IUPAC Name:
    1,3-dihydro-2-benzofuran-1,3-dione
    State Form:
    liquid