DL-Lactide Struktur

Dilactid

Bezeichnung:Dilactid

CAS-Nr95-96-5

Englisch Name:DL-Lactide

CBNumberCB7178777

SummenformelC6H8O4

Molgewicht144.13

MOL-Datei95-96-5.mol

Synonyma

Dilactid

Dilactid physikalisch-chemischer Eigenschaften

Schmelzpunkt	116-119 °C
Siedepunkt	142 °C8 mm Hg(lit.)
Dichte	1.186±0.06 g/cm3(Predicted)
Dampfdruck	0.311Pa at 25℃
Flammpunkt	180°C
storage temp.	2-8°C
Löslichkeit	Soluble in chloroform and methanol. Slightly soluble in benzene.
Aggregatzustand	Crystalline Powder
Farbe	White
Wasserlöslichkeit	16.3g/L at 20℃
Sensitive	Moisture Sensitive
BRN	82121
LogP	0.4 at 25℃
NIST chemische Informationen	1,4-Dioxane-2,5-dione, 3,6-dimethyl-(95-96-5)
EPA chemische Informationen	1,4-Dioxane-2,5-dione, 3,6-dimethyl- (95-96-5)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38-36
S-Sätze:	26-37/39
WGK Germany	2
RTECS-Nr.	JH1100000
TSCA	Yes
HS Code	29322090

Gefahreninformationscode (GHS)

DL-Lactide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
White crystalline powder
Verwenden
DL-Lactide is used to produce 2-hydroxy-propionic acid 1-(1-phenyl-ethoxycarbonyl)-ethyl ester. It acts as an important raw material and an intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyes. It is involved in enzymatic alcoholysis to produce both alkyl (R)-lactates and alkyl (S,S)-lactyllactates.
Verwenden
Enzymatic alcoholysis of this racemic lactide catalyzed by commercial Novozym® 435 produces both alkyl (R)-lactates and alkyl (S,S)-lactyllactates in good yield and high enantiopurity.
Definition
ChEBI: Lactide is a member of dioxanes.
Allgemeine Beschreibung
3,6-Dimethyl-1,4-dioxane-2,5-dione (or rac-lactide), is the 50:50 racemic mixture of D- and L-Lactide. Rac-lactide is a lactone derived from lactic acid that has attracted great interest in academia and commercial applications, as it is derived from abundant renewable resources. Rac-lactide can be ready polymerized via ring-opening polymerization, using a variety of metal or organocatalysts, yielding poly(D,L-lactide). While the resulting polymer is generally amorphous, the use of stereospecific catalysts can lead to heterotactic PLA, which exhibits some degree of crystallinity.
Flammability and Explosibility
Non flammable

DL-Lactide Upstream-Materialien And Downstream Produkte

Dilactid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

95-96-5, DL-Lactide Verwandte Suche:

Send Inquriy