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M0375

Sigma-Aldrich

Acido maleico

ReagentPlus®, ≥99% (HPLC)

Sinonimo/i:

Acido cis-Butenedioico, Acido tosilico

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About This Item

Formula condensata:
HO2CCH=CHCO2H
Numero CAS:
110-16-7
Peso molecolare:
116.07
Beilstein:
605762
Numero CE:
203-742-5
Numero MDL:
MFCD00063177
Codice UNSPSC:
12352100
ID PubChem:
24896549
NACRES:
NA.21

Livello qualitativo

200

Nome Commerciale

ReagentPlus®

Saggio

≥99% (HPLC)

Forma fisica

powder

Impurezze

≤2.0% water

Residuo alla calcinazione

≤0.1%

pKa (25 °C)

(1) 1.97, (2) 6.24

Punto di fusione

130-135 °C (lit.)

Densità

1.59 g/mL at 25 °C (lit.)

Stringa SMILE

OC(=O)\C=C/C(O)=O

InChI

1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-
VZCYOOQTPOCHFL-UPHRSURJSA-N

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Categorie correlate

Descrizione generale

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.

Applicazioni

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.

Qualità

Repurified

Note legali

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

Pittogrammi

CorrosionExclamation mark
GHS05,GHS07

Avvertenze

Danger

Indicazioni di pericolo

H302 + H312 - H314 - H317 - H335

Classi di pericolo

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1 - Skin Sens. 1 - STOT SE 3

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

8A - Combustible, corrosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 1

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Certificati d'analisi (COA)

Lot/Batch Number
SLCG3175
WXBD7023V
WXBD6825V
WXBD6555V
WXBD6749V

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Bromine-Catalyzed Isomerization of Maleic Acid to Fumaric Acid.
Jwo JJ.
J. Chin. Chem. Soc., 28(1), 34-41 (1981)
A refinement of the crystal structure of maleic acid.
James MNG and Williams GJB.
Acta Crystallographica Section B, Structural Science, 30(5), 1249-1257 (1974)
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)
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)
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