Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Reference substances

Reference substances

Currently viewing:
IUPAC name:
1,3-dihydro-2-benzofuran-1,3-dione

Inventory

EC number:
201-607-5
EC name:
Phthalic anhydride
CAS number:
85-44-9
CAS number:
85-44-9
Synonyms
Names:
1,3-Isobenzofurandione
1,3-Dihydro-2-benzofuran-1,3-dione
1,3-Isobenzofurandione
1,3-Phthalandione
2-Benzofuran-1,3-dione
Phthalic anhydride
Identifier:
CAS number
85-44-9
Identifier:
IUPAC name
1,3-dihydro-2-benzofuran-1,3-dione
Identifier:
IUPAC name
1,3-dihydro-2-benzofuran-1,3-dione
Identifier:
IUPAC name
2-bentzofuran-1,3-dione
Identifier:
IUPAC name
Phthalic anhydride
Identifier:
ChemSpider ID
CSID:6552
Identifier:
common name
Isobenzofuran-1,3-dione
Identifier:
common name
Phthalic anhydride
Identifier:
PubChem
CID 6811
Identifier:
other: chemical name
1,3-Isobenzofurandione
Identifier:
other: InChl
1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
Identifier:
other: SMILES notation
C1=CC=C2C(=C1)C(=O)OC2=O
Identifier:
other: Molecular formula
C8H4O3
Identifier:
other: InChl
InChI=1/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
Identifier:
other: InChl
InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
Identifier:
other: InChl
InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H AuxInfo=1/0/N:9,11,6,8,3,5,2,7,1,10,4/E:(1,2)(3,4)(5,6)(7,8)(9,10)/rA:11OCCOCCCCCOC/rB:d1;s2;s2;d-3;s3;s4s5;s5;d-6;d7;d-8s9;/rC:0,-4.3619,0;1.2352,-3.4934,0;2.7021,-3.9759,0;1.2352,-1.9108,0;3.6285,-2.7021,0;3.3004,-5.3656,0;2.76,-1.4282,0;5.1341,-2.8759,0;4.8446,-5.5201,0;3.2233,0,0;5.7516,-4.2847,0;
Identifier:
other: InChl
InChl=1/C8H4=3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
Identifier:
other: EPA Substance Registry Services (SRS)
Internal Tracking Number: 10355
Identifier:
other: SMILES notation
O=C1OC(=O)C2=C1C=CC=C2
Identifier:
other: SMILES notation
O=C1OC(=O)C2=C1C=CC=C2
Identifier:
other: SMILES notation
O=c1oc(=O)c2ccccc12
Identifier:
other: SMILES notation
c12c(C(=O)OC1=O)cccc2
2-benzofuran-1,3-dione

Molecular and structural information

Molecular formula:
C8H4O3
Molecular weight:
148.116
SMILES notation:
O=C1OC(=O)c2ccccc12
InChl:
InChI=1/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
Structural formula:
Chemical structure

Related substances

Identifier:
CAS number
Identity:
39363-63-8