Maleic Anhydride

  • Identifiers

    CAS number
    108-31-6

    Molecular formula
    C4H2O3

    SMILES
    C1=CC(=O)OC1=O
    OOO

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

    caramellic 46.72%
    burnt 46.63%
    sweet 46.08%
    nutty 39.9%
    odorless 36.23%
    winey 35.66%
    buttery 31.56%
    sharp 28.71%
    sour 28.49%
    coumarinic 24.98%

    Scent© AI

  • Properties

    XLogP3-AA
    -0.1 Well soluble in ETH, DPG, PG

    Molecular weight
    98.06 g/mol

    Vapor pressure est.

    • 0.2597 hPa @ 20°C
    • 0.3859 hPa @ 25°C

    Evaporation rate
    Moderately fast

    Melting points

    • 127 °F (NTP, 1992)
    • 52.56 °C
    • 53 °C
    • 127 °F

    Boiling points

    • 387 to 390 °F at 760 mmHg (NTP, 1992)
    • 202.0 °C at 760 mm Hg
    • 202 °C
    • 396 °F

    Flash points

    • 218 °F (NTP, 1992)
    • 102 °C (closed cup)
    • 110 °C (open cup)
    • 102 °C c.c.
    • 218 °F

    Solubilities

    • Soluble; decomposes in hot solvent (NTP, 1992)
    • In water: reaction with water
    • Soluble in water, forming maleic acids
    • Solubility at 25 °C: 227 g/100 g acetone; 112 g/100 g ethyl acetate; 52.5 g/100 g chloroform; 50 g/100 g benzene; 23.4 g/100 toluene; 19.4 g/100 g o-xylene; 0.60 g/100 g carbon tetrachloride; 0.25 g/100 g ligroin; soluble in dioxane; soluble in alcohol with ester formation
    • Soluble in ether
    • Solubility in water: reaction, releasing heat
    • Reacts

  • Synonyms

    • MALEIC ANHYDRIDE
    • 108-31-6
    • 2,5-Furandione
    • furan-2,5-dione
    • Toxilic anhydride
    • Maleic acid anhydride
    • cis-Butenedioic anhydride
    • Dihydro-2,5-dioxofuran
    • 2,5-dihydrofuran-2,5-dione
    • Maleinanhydrid
NaN -Infinity

Botanical

Name CAS Botanical Proportion
Pineapple pulp Ananas comosus (L.) Merr., fam. Bromeliaceae 0.81%