Other Trading Names:

  • Dioxane
  • L-Lactide

CAS Number: 4511-42-6

HS Code: 39079990

Types of Packaging:

  • 25 kg/drum
  • 25 kg/bag
Inquiry right-arrow $100.00
Availability: Out of stock


White crystalline powder



Assay (min)


 Melting point

92-94 °C(lit.)

 Boiling point



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

Chemical Description:

  • Lactide is a cyclic diester derived from lactic acid, primarily utilized in the production of polylactic acid (PLA), a biodegradable polymer widely employed in various industries.
  • Chemically, lactide consists of two molecules of lactic acid, where the hydroxyl group (-OH) of one molecule reacts with the carboxyl group (-COOH) of another, leading to the elimination of a water molecule and the formation of a cyclic structure.
  • This cyclic structure can exist in three different forms: L-lactide, D-lactide, and meso-lactide, depending on the stereochemistry of the starting lactic acid molecules.
  • L-lactide and D-lactide are enantiomers, meaning they are non-superimposable mirror images of each other, while meso-lactide is a diastereomer.
  • Lactide typically appears as a white, crystalline solid with a melting point ranging from 95 to 140°C, depending on its stereochemistry and purity.
  • Its molecular formula is C₆H₈O₄, and it has a molar mass of approximately 144.12 grams per mole.
  • Lactide is commonly produced through the ring-opening polymerization of lactic acid under controlled conditions of temperature and pressure, often catalyzed by metal-based or organic catalysts.
  • The polymerization process results in the formation of long chains of repeating lactide units, leading to the synthesis of PLA.
  • PLA exhibits several advantageous properties, including biodegradability, biocompatibility, and mechanical strength, making it suitable for applications such as packaging materials, biomedical devices, and 3D printing.
  • Furthermore, lactide serves as a crucial intermediate in the synthesis of other biodegradable polymers and copolymers, contributing to the development of environmentally friendly materials.
  • Its biodegradability is particularly beneficial in reducing environmental pollution and addressing sustainability concerns associated with traditional petroleum-based plastics.
  • Lactide or L Lactide is a white crystalline powder that is used widely for a number of purposes including in the packaging, electronics, adhesives etc.
  • Overall, lactide plays a pivotal role in the advancement of green chemistry and the transition towards more sustainable materials in various industrial sectors.
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