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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
Maleic acid
EC Number:
203-742-5
EC Name:
Maleic acid
CAS Number:
110-16-7
Molecular formula:
C4H4O4
IUPAC Name:
but-2-enedioic acid

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • Maleic acid
  • Maleic acid (40% in water)
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid

    Legal Entity Composition(s) open all close all

    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid
    Degree of purity:
    > 99.8 - < 100 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid
    Impurity 1
    Reference substance name:
    unknown impurity
    IUPAC Name:
    unknown impurity


    Constituent 1
    Chemical structure
    Reference substance name:
    Maleic acid
    EC Number:
    203-742-5
    EC Name:
    Maleic acid
    CAS Number:
    110-16-7
    Molecular formula:
    C4H4O4
    IUPAC Name:
    but-2-enedioic acid

    Composition(s) generated upon use

    Other types of composition(s)