Description

2-Oxacycloheptanone is a versatile seven-membered lactone, also known as ε-caprolactone. This organic compound serves as a critical monomer and chemical intermediate in advanced polymer synthesis. It is essential for manufacturers in the polymer, pharmaceutical, and specialty chemical industries seeking to produce high-performance materials with tailored properties such as biodegradability and controlled release.

Application

• Polymer Synthesis: Primary monomer for the production of polycaprolactone (PCL), a biodegradable polyester used in medical devices, drug delivery systems, and compostable packaging.
• Resin & Coating Modifier: Used to modify polyurethanes, acrylics, and epoxy resins to enhance flexibility, toughness, and adhesion properties.
• Adhesive & Sealant Formulation: Acts as a reactive diluent and plasticizer in high-performance adhesives and sealants.
• Pharmaceutical Intermediates: Key building block in the synthesis of various active pharmaceutical ingredients (APIs) and prodrugs.
• Specialty Chemical Synthesis: Intermediate for producing plasticizers, surfactants, and other fine chemicals.
• 3D Printing Materials: Component in resins for stereolithography (SLA) and other additive manufacturing processes to control viscosity and cure properties.

Basic Information

Product Name	2-Oxacycloheptanone
CAS No.	502-44-3
Molecular Formula	C6H10O2
Molecular Weight	114.14 g/mol
Synonyms	ε-Caprolactone; 6-Hexanolactone; Hexano-6-lactone; 6-Caprolactone; 1-Oxa-2-oxocycloheptane; 2-Oxepanone; Caprolactone monomer; 6-Hydroxyhexanoic acid lactone
EINECS	207-938-1

Quality Control

Our 2-Oxacycloheptanone is produced under a stringent quality management system. Each batch is tested to ensure high purity and consistency, meeting the demands of pharmaceutical and high-performance polymer applications. Certificates of Analysis (COA) with detailed specifications for identity, assay, and impurity profiles are provided for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product quality and stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0 %
Water Content (KF)	≤ 0.1 %
Acidity (as Hexanoic Acid)	≤ 0.1 %

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