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303143

Sigma-Aldrich

3,6-Dimethyl-1,4-dioxane-2,5-dione

99%

Sinônimo(s):

DL-Lactide, rac-Lactide, Lactide

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About This Item

Fórmula empírica (Notação de Hill):
C6H8O4
Número CAS:
95-96-5
Peso molecular:
144.13
Número CE:
202-468-3
Número MDL:
MFCD00011685
Código UNSPSC:
12352100
ID de substância PubChem:
24858300
NACRES:
NA.22

Ensaio

99%

forma

crystals

pb

142 °C/8 mmHg (lit.)

pf

116-119 °C

temperatura de armazenamento

2-8°C

cadeia de caracteres SMILES

CC1OC(=O)C(C)OC1=O

InChI

1S/C6H8O4/c1-3-5(7)10-4(2)6(8)9-3/h3-4H,1-2H3

chave InChI

JJTUDXZGHPGLLC-UHFFFAOYSA-N

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Descrição geral

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.

Aplicação

3,6-Dimethyl-1,4-dioxane-2,5-dione can be used as a reactant:
  • To synthesize multi-block copolymers of polylactide and polycarbonate.
  • In the aluminum-catalyzed polymerization of propene oxide, lactide, and phthalic anhydride to produce multi-block polyesters.

Pictogramas

Exclamation mark
GHS07

Palavra indicadora

Warning

Frases de perigo

H319

Classificações de perigo

Eye Irrit. 2

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 2

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves

Certificados de análise (COA)

Busque Certificados de análise (COA) digitando o Número do Lote do produto. Os números de lote e remessa podem ser encontrados no rótulo de um produto após a palavra “Lot” ou “Batch”.

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