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Merck
CN

63200

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
UNSPSC Code:
12162002
NACRES:
NA.23
PubChem Substance ID:
329759813
EC Number:
203-571-6
Beilstein/REAXYS Number:
106909
MDL number:
MFCD00005518

Key Documents

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Product Name

Maleic anhydride, puriss., ≥99.0% (NT)

InChI key

FPYJFEHAWHCUMM-UHFFFAOYSA-N

InChI

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

SMILES string

O=C1OC(=O)C=C1

vapor density

3.4 (vs air)

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

Quality Level

200

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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).

General description

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

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

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1A - STOT RE 1 Inhalation

target_organs

Respiratory system

supp_hazards

EUH071

Storage Class

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

wgk

WGK 1

flash_point_f

217.4 °F - closed cup

flash_point_c

103 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCP0436
SDBB3003
STBL3967
STBL3560
STBJ7327

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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)
Dissociation of protein subunits by maleylation.
C L Sia et al.
Biochemical and biophysical research communications, 31(5), 731-737 (1968-06-10)
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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