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Sigma-Aldrich

Maleic anhydride

puriss., ≥99.0% (NT)

Synonym(s):

2,5-Furandione

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About This Item

Empirical Formula (Hill Notation):
C4H2O3
CAS Number:
108-31-6
Molecular Weight:
98.06
Beilstein:
106909
EC Number:
203-571-6
MDL number:
MFCD00005518
UNSPSC Code:
12162002
PubChem Substance ID:
329759813

vapor density

3.4 (vs air)

Quality Level

200

vapor pressure

0.16 mmHg ( 20 °C)

grade

puriss.

Assay

≥99.0% (NT)

form

flakes
powder or crystals

autoignition temp.

870 °F

expl. lim.

7.1 %

bp

200 °C (lit.)

mp

51-56 °C (lit.)
52-54 °C

SMILES string

O=C1OC(=O)C=C1

InChI

1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H

InChI key

FPYJFEHAWHCUMM-UHFFFAOYSA-N

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General description

Maleic anhydride is a dehydration product of maleic acid that is of considerable industrial importance.

Application

Maleic anhydride has been used as a reference standard for the determination of the analyte in:
  • Workplace air samples by capillary gas chromatography combined with electron capture detection (GC-ECD).

It may be used as a derivatization agent for fatty alcohol ethoxylates in:
  • Industrial mixtures, cleaning products and river and sea waters by high performance liquid chromatography (HPLC) coupled with ultraviolet-visible (UV-Vis) diode array detection (DAD).

Other Notes

For the complete dissociation of enzymes into soluble subunits; For the reversible blocking of amino groups (lysine reagent); P.J.G. Butler, J.I. Harris, B.S. Hartley, R. Lebermann; For the maleylation of proteins

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Certificates of Analysis (COA)

Lot/Batch Number
STBJ7327
STBH5037
STBH4570
STBH4144
STBG8234

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Dissociation of protein subunits by maleylation.
C L Sia et al.
Biochemical and biophysical research communications, 31(5), 731-737 (1968-06-10)
The Biochemical Journal, 103, 78-78 (1967)
Areti Tzereme et al.
Polymers, 11(3) (2019-04-10)
The main purpose of this study was to investigate the synthesis of some cross-linked carboxyl-grafted chitosan derivatives to be used as selective adsorbents for diclofenac (DCF) pharmaceutical compounds from aqueous mixtures. Four different materials were synthesized using succinic anhydride (CsSUC)
Determination of maleic anhydride in occupational atmospheres.
Pfaffli P, et al.
Journal of Chromatography A, 982(2), 261-266 (2002)
Determination of fatty alcohol ethoxylates by derivatisation with maleic anhydride followed by liquid chromatography with UV-vis detection.
Mico-Tormos A, et al.
Journal of Chromatography A, 1180(1-2), 32-41 (2008)
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