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Merck
모든 사진(4)

주요 문서

M0375

Sigma-Aldrich

Maleic acid

ReagentPlus®, ≥99% (HPLC)

동의어(들):

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 코드:
12352100
PubChem Substance ID:
NACRES:
NA.21

Quality Level

제품 라인

ReagentPlus®

분석

≥99% (HPLC)

양식

powder

불순물

≤2.0% water

무기 잔류물

≤0.1%

pKa(25 °C)

(1) 1.97, (2) 6.24

mp

130-135 °C (lit.)

density

1.59 g/mL at 25 °C (lit.)

작용기

carboxylic acid

SMILES string

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-

InChI key

VZCYOOQTPOCHFL-UPHRSURJSA-N

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일반 설명

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.

애플리케이션

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.

품질

Repurified

법적 정보

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

픽토그램

CorrosionExclamation mark

신호어

Danger

유해 및 위험 성명서

Hazard Classifications

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

표적 기관

Respiratory system

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1


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문서 라이브러리 방문

이미 열람한 고객

Esterification of maleic acid with ethanol over cation-exchange resin catalysts.
Yadav GD and Thathagar MB.
Reactive functional Polymers, 52(2), 99-110 (2002)
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)
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)
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)
Bromine-Catalyzed Isomerization of Maleic Acid to Fumaric Acid.
Jwo JJ.
J. Chin. Chem. Soc., 28(1), 34-41 (1981)

문서

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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