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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
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vapor density

3.4 (vs air)

Quality Segment

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

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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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

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