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M0375 Sigma-Aldrich

Maleic acid

ReagentPlus®, ≥99.0% (HPLC)

Synonym: cis-Butenedioic acid, Toxilic acid

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Properties

Related Categories Acids, Acids & Bases, Biochemicals and Reagents, Biological Buffers, Buffers A to Z,
grade   ReagentPlus®
InChI Key   VZCYOOQTPOCHFL-UPHRSURJSA-N
assay   ≥99.0% (HPLC)
form   powder
impurities   ≤2.0% water
ign. residue   ≤0.1%
pKa (25 °C)   (1) 1.97, (2) 6.24
mp   137-140 °C(lit.)
density   1.59 g/mL at 25 °C(lit.)

Description

Packaging

1 kg in poly bottle

100, 500 g in poly bottle

25 kg in poly drum

Quality

Repurified

Application

Maleic acid has been used in the preparation of tris-maleate buffer and sodium maleate buffer. It has also been used for the pretreatment of poplar tracheid cell walls for the spectroscopic analysis of lignin. It may be used to synthesize superswelling acrylamide/maleic acid hydrogels.

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. Its crystalline structure has been analyzed. Reaction kinetics and mechanism of the isomerization of maleic acid to fumaric acid in the presence of ceric and bromide ions has been investigated. The reaction mechanism and reactivity ratios for the radical copolymerization of maleic acid with styrene have been determined.

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Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN 3077 9 / PGIII
WGK Germany 
1
Flash Point(F) 
260.6 °F
Flash Point(C) 
127 °C

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles

Articles

MSMLS Online Plate Map

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Keywords: Mass spectrometry, Metabolites

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Molarity Calculator and Normality Calculator for Acids and Bases

The molarity calculator tool provides lab-ready directions describing how to prepare an acid or base solution of specified Molarity (M) or Normality (N) from a concentrated acid or base solution.  To...

Peer-Reviewed Papers
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References

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