Description

D(+)-Lactide is a high-purity, chiral cyclic dimer of lactic acid, serving as the essential monomer for synthesizing poly(L-lactic acid) (PLLA). This compound matters because it enables the production of high-performance, biodegradable polymers with excellent mechanical properties and optical purity. It is critically needed by manufacturers in the pharmaceutical, medical device, and advanced bioplastics industries for applications ranging from resorbable implants to sustainable packaging materials.

Application

• Poly(L-lactic acid) (PLLA) Synthesis: The primary monomer for ring-opening polymerization (ROP) to produce high molecular weight, crystalline PLLA.
• Biomedical Implants: Used in the manufacture of bioresorbable screws, pins, plates, and surgical meshes that degrade safely in the body.
• Controlled Drug Delivery: A key building block for creating biodegradable polymer matrices in sustained-release drug delivery systems.
• High-Strength Bioplastics: Production of engineering-grade biopolymers for durable applications in automotive components and electronics.
• 3D Printing Filaments: Serves as a precursor for producing specialized, biodegradable filaments for additive manufacturing.
• Specialty Chemical Intermediate: Used in organic synthesis to introduce chiral lactone structures into more complex molecules.

Basic Information

Product Name	D(+)-Lactide
CAS No.	13076-17-0
Molecular Formula	C6H8O4
Molecular Weight	144.13 g/mol
Synonyms	(3S,6S)-3,6-Dimethyl-1,4-dioxane-2,5-dione; (S,S)-Lactide; L-Lactide; D-Lactide; (S)-(-)-Lactide; Poly(L-lactic acid) monomer; 3,6-Dimethyl-1,4-dioxane-2,5-dione, (3S,6S)-; L(-)-Lactide
EINECS	235-984-0

Quality Control

Our D(+)-Lactide is manufactured under strict quality management systems to ensure batch-to-batch consistency and high optical purity. Quality is verified through comprehensive analytical testing, including chiral HPLC, NMR, and melting point determination. Certificates of Analysis (COA) detailing purity, enantiomeric excess, and impurity profiles are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0 %
Enantiomeric Excess (ee)	≥ 99.5 %
Melting Point	95 - 98 °C
Water Content (KF)	≤ 0.1 %
Residual Solvents (GC)	Meets ICH guidelines

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.