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L-Lactide

L-Lactide

Basic Information

CAS No.: 4511-42-6
Molecular Formula: C6H8O4
Molecular Weight: 144.13

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Product Details

L-lactide (3,6-dimethyl-1,4-dioxane-2,5-dione) is a cyclic lactone that is derived from lactic acid. It has the molecular formula C6H8O4 and is an essential building block for synthesizing polylactic acid (PLA) plastics, which are widely used in the manufacturing industry.


Chemical Properties

PropertyValue

Melting point

92-94 °C(lit.)

Boiling point

255°C

Density

1.186±0.06 g/cm3(Predicted)

Vapor pressure

0.311Pa at 25℃

Refractive index

1.4475

Storage temp.

2-8°C

Solubility

Soluble in chloroform, and methanol. Slightly soluble in benzene.

Form

Solid

Color

White to Off-White

Optical Rotation

[α]20/D 285°, c = 1 in toluene

Water Solubility

16.7g/L at 20℃

Sensitive

Moisture Sensitive

BRN

82124

Stability:

Hygroscopic

InChIKey

JJTUDXZGHPGLLC-IMJSIDKUSA-N

LogP

0.4 at 25℃

CAS DataBase Reference

4511-42-6(CAS DataBase Reference)

EPA Substance Registry System

1,4-Dioxane-2,5-dione, 3,6-dimethyl-, (3S,6S)- (4511-42-6)


Safety Information

PropertyValue

Hazard Codes

Xi

Risk Statements

36/37/38-36

Safety Statements

26-37/39

WGK Germany

3

TSCA

Yes

HS Code

29322090



Product Usage

L-Lactide is a high-purity cyclic ester and the primary precursor for the synthesis of Poly(L-lactic acid) (PLLA), a leading biodegradable and biocompatible polymer. Its most significant application is in the medical field, where it is used to manufacture absorbable surgical sutures, orthopedic fixation devices like bone screws, and scaffolds for tissue engineering. In the sustainable packaging industry, it serves as the essential monomer for producing compostable bioplastics, including films, food containers, and fiber materials. Furthermore, L-lactide is utilized in controlled drug delivery systems, acting as a polymer matrix that safely degrades within the human body. Its role is pivotal in the transition toward green chemistry and high-performance bio-based materials.

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