M0375
Maleic acid
ReagentPlus®, ≥99% (HPLC)
Synonym(s):
cis-Butenedioic acid, Toxilic acid
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About This Item
Linear Formula:
HO2CCH=CHCO2H
CAS Number:
Molecular Weight:
116.07
Beilstein:
605762
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.21
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Recommended Products
grade
reagent grade
Quality Level
vapor density
4.0 (at °C, vs air)
vapor pressure
≤0.1 at hPa ( 20 °C)
product line
ReagentPlus®
Assay
≥99% (HPLC)
form
powder
concentration
≤100%
impurities
≤2.0% water
ign. residue
≤0.1%
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General description
Maleic acid (MA) is a dicarboxylic acid that undergoes esterification with ethanol in the presence of cation-exchange resin catalysts to form diethyl maleate.[1] Its crystalline structure has been analyzed.[2] Reaction kinetics and mechanism of the isomerization of maleic acid to fumaric acid in the presence of ceric and bromide ions has been investigated.[3] The reaction mechanism and reactivity ratios for the radical copolymerization of maleic acid with styrene have been determined.[4]
Application
Maleic acid has been used in the preparation of tris-maleate buffer[5] and sodium maleate buffer.[6][7] It has also been used for the pretreatment of poplar tracheid cell walls for the spectroscopic analysis of lignin.[8] It may be used to synthesize superswelling acrylamide/maleic acid hydrogels.[9]
Analysis Note
Repurified
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1 - Skin Sens. 1 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
8A - Combustible corrosive hazardous materials
WGK
WGK 1
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