303143
3,6-Dimethyl-1,4-dioxane-2,5-dione
99%
Synonym(s):
DL-Lactide, rac-Lactide, Lactide
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All Photos(2)
About This Item
Empirical Formula (Hill Notation):
C6H8O4
CAS Number:
Molecular Weight:
144.13
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22
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Quality Level
Assay
99%
form
crystals
bp
142 °C/8 mmHg (lit.)
mp
116-119 °C
functional group
ester
storage temp.
2-8°C
SMILES string
CC1OC(=O)C(C)OC1=O
InChI
1S/C6H8O4/c1-3-5(7)10-4(2)6(8)9-3/h3-4H,1-2H3
InChI key
JJTUDXZGHPGLLC-UHFFFAOYSA-N
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General description
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.
Application
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.
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2
Storage Class Code
11 - Combustible Solids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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