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M0375

Sigma-Aldrich

Maleic acid

ReagentPlus®, ≥99% (HPLC)

Synonym(s):

cis-Butenedioic acid, Toxilic acid

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100 G
¥395.27
500 G
¥762.98
1 KG
¥1,176.09
25 KG
¥22,369.80

¥395.27

Available to ship on2025年4月14日Details

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100 G
¥395.27
500 G
¥762.98
1 KG
¥1,176.09
25 KG
¥22,369.80

About This Item

Linear Formula:
HO2CCH=CHCO2H
CAS Number:
110-16-7
Molecular Weight:
116.07
Beilstein:
605762
EC Number:
203-742-5
MDL number:
MFCD00063177
UNSPSC Code:
12352100
PubChem Substance ID:
24896549
NACRES:
NA.21

¥395.27

Available to ship on2025年4月14日Details

Request a Bulk Order

grade

reagent grade

Quality Level

200

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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1 of 4

This Item
92816913243912735
马来酸 ReagentPlus®, ≥99% (HPLC)

M0375

马来酸

马来酸 TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

92816

马来酸

马来酸 ≥99.5% (HPLC), <=0.5% water

913243

马来酸

马来酸 electronic grade, ≥99.97% trace metals basis, water <=350 ppm

912735

马来酸

Quality Level

200

Quality Level

300

Quality Level

100

Quality Level

100

form

powder

form

-

form

powder

form

powder

impurities

≤2.0% water

impurities

-

impurities

-

impurities

-

mp

130-135 °C (lit.)

mp

130-135 °C (lit.)

mp

130-135 °C (lit.), 137-140 °C (lit)

mp

130-135 °C (lit.)

density

1.59 g/mL at 25 °C (lit.)

density

1.59 g/mL at 25 °C (lit.)

density

1.59 g/mL at 20 °C (lit.), 1.59 g/mL at 25 °C (lit.)

density

1.59 g/mL at 25 °C (lit.)

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]

Quality

Repurified

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

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

  • Specification Sheet

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    Certificates of Analysis (COA)

    Lot/Batch Number
    0000435529
    0000435529
    0000430376
    0000432635
    0000430382

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    Radical copolymerization of maleic acid with styrene.
    Switala-Zeliazkow M.
    Eur. Polymer J., 35(1), 83-88 (1999)
    Esterification of maleic acid with ethanol over cation-exchange resin catalysts.
    Yadav GD and Thathagar MB.
    Reactive functional Polymers, 52(2), 99-110 (2002)
    Determination of total dietary fibre and available carbohydrates: A rapid integrated procedure that simulates in vivo digestion.
    McCleary BV, et al.
    Starch, 67(9-10), 860-883 (2015)
    Swelling equilibria and dye adsorption studies of chemically crosslinked superabsorbent acrylamide/maleic acid hydrogels.
    Karadag E, et al.
    Eur. Polymer J., 38(11), 2133-2141 (2002)
    Bromine-Catalyzed Isomerization of Maleic Acid to Fumaric Acid.
    Jwo JJ.
    J. Chin. Chem. Soc., 28(1), 34-41 (1981)
    View All Related Papers

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    Acid and base chart lists the strength of acids and bases (strongest to weakest) in order. Simple to use laboratory reference chart for scientists, researchers and lab technicians.

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