Dimethylmaleat

Bezeichnung:Dimethylmaleat

CAS-Nr624-48-6

Englisch Name:Dimethyl maleate

CBNumberCB4854003

SummenformelC6H8O4

Molgewicht144.13

MOL-Datei624-48-6.mol

Synonyma

Dimethylmaleat

Dimethylmaleat physikalisch-chemischer Eigenschaften

Schmelzpunkt	-19°C
Siedepunkt	204-205 °C(lit.)
Dichte	1.152 g/mL at 25 °C(lit.)
Dampfdruck	48Pa at 25℃
Brechungsindex	n20/D 1.441(lit.)
Flammpunkt	196 °F
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	water: soluble77.9g/L at 20°C
Aggregatzustand	Liquid
Farbe	Clear
Geruch (Odor)	mild char. odor
Wasserlöslichkeit	Miscible with water.
BRN	471705
Stabilität	Stable. Combustible. Incompatible with acids, bases, reducing agents, strong oxidizing agents.
LogP	0.52 at 35℃
CAS Datenbank	624-48-6(CAS DataBase Reference)
NIST chemische Informationen	2-Butenedioic acid (Z)-, dimethyl ester(624-48-6)
EPA chemische Informationen	2-Butenedioic acid (2Z)-, dimethyl ester (624-48-6)

Sicherheit

Kennzeichnung gefährlicher	Xn,C
R-Sätze:	21/22-36/37/38-43-37-34-22
S-Sätze:	26-36/37-23-45-36/37/39
RIDADR	UN 2810 6.1/PG 3
WGK Germany	1
RTECS-Nr.	EM6300000
TSCA	Yes
HazardClass	6.1(b)
PackingGroup	III
HS Code	29171990

Gefahreninformationscode (GHS)

Dimethyl maleate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R21/22:Gesundheitsschädlich bei Berührung mit der Haut und beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R43:Sensibilisierung durch Hautkontakt möglich.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
Chemische Eigenschaften
colourless liquid
Verwenden
Dimethyl maleate is acts as a dienophile involved in ultrasonic irradiation promoted Diels-Alder reaction with substituted furans. It is widely used as an intermediate and additive for pharmaceuticals, copolymers, pigments, plastics, paints, adhesives and agrochemicals. As an internal modifier, it increases the glass transition temperature of styrene or vinyl chloride polymer. It plays a vital role to improve the hardness and toughness of polymer films such as copolymers of vinyl acetate.
Verwenden
Dimethyl maleate is widely used in the plastics and chemical industries and as a vaporization retardant of insecticides.
Definition
ChEBI: Dimethyl maleate is a maleate ester resulting from the formal condensation of both carboxy groups of maleic acid with methanol. It is commonly used as a dienophile for Diels-Alder-type cycloaddition reactions in organic synthesis. It is a maleate ester, a diester and a methyl ester. It derives from a methanol.
synthetische
Dimethyl maleate can be synthesized from maleic anhydride and methanol, with sulfuric acid acting as acid catalyst, via a nucleophilic acyl substitution for the monomethyl ester, followed by a Fischer esterification reaction for the dimethyl ester.
Allgemeine Beschreibung
Dimethyl maleate (DMM) is a reactive dienophile and undergoes ultrasonic irradiation promoted Diels-Alder reaction with substituted furans. Mesoporous siliceous SBA-15-supported Cu catalyzed gas phase hydrogenolysis of DMM to 1,4-butanediol (BDO) has been reported. Aluminium chloride has been reported to accelerate the Diels-Alder reaction of DMM and anthracene. DMM can be synthesized by the esterification of maleic anhydride with sulfuric acid and methanol.
Flammability and Explosibility
Non flammable

Dimethyl maleate Upstream-Materialien And Downstream Produkte

Dimethylmaleat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

624-48-6, Dimethyl maleate Verwandte Suche:

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