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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Reference substances

Reference substances

Currently viewing:
IUPAC name:
butan-2-one

Inventory

EC number:
201-159-0
EC name:
Butanone
CAS number:
78-93-3
CAS number:
78-93-3
Synonyms
Names:
2-Butanone
2-butanone
MEK
ethyl methyl ketone
methyl acetone
methyl ethyl ketone
Identifier:
IUPAC name
2-butanone
Identifier:
IUPAC name
Butanone
Identifier:
IUPAC name
butan-2-one
Identifier:
IUPAC name
butan-2-one
Identifier:
common name
MEK
Identifier:
common name
Methyl ethyl ketone
Identifier:
common name
methylethylketone
Identifier:
other: InChl
1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
Identifier:
other: SMILES notation
C(CC)(C)=O
Identifier:
other: SMILES notation
CCC(C)=O
Identifier:
other: InChl
InChI=1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
Identifier:
other: InChl
InChI=1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
Identifier:
other: SMILES notation
O=C(C)CC
Butan-2-one

Molecular and structural information

Molecular formula:
C4H8O
Molecular weight:
ca. 72
SMILES notation:
CCC(=O)C
InChl:
InChI=1/C4H8O/c1-3-4(2)5/h3H2,1-2H3
Structural formula:
Chemical structure

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