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19-0610

Sigma-Aldrich

Maleic anhydride

SAJ first grade, ≥98.0%

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/REAXYS Number:
106909
EC Number:
203-571-6
MDL number:
MFCD00005518
UNSPSC Code:
12352107
PubChem Substance ID:
329751798

grade

SAJ first grade

vapor density

3.4 (vs air)

vapor pressure

0.16 mmHg ( 20 °C)

assay

≥98.0%

form

solid

autoignition temp.

870 °F

expl. lim.

7.1 %

availability

available only in Japan

bp

200 °C (lit.)

mp

51-56 °C (lit.)

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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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

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 1

flash_point_f

217.4 °F - closed cup

flash_point_c

103 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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We have conducted collision induced dissociation experiments on the hydrogen maleate anion (MaH(-), m/z = 115) and the anionic maleate MgCl complex (MaMgC(-), m/z = 173). In addition, we have computationally investigated the observed fragmentation reactions. We find that both
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