Description

1,3-Dioxepan-2-One is a versatile seven-membered cyclic ester, also known as a lactone, with the CAS number 4427-94-5. This compound serves as a crucial monomer and chemical intermediate for synthesizing biodegradable polymers and specialty materials. It is particularly valuable for industries focused on sustainable chemistry, advanced material science, and pharmaceutical synthesis. Its unique ring structure makes it a key building block for creating polymers with tailored degradation profiles and functional properties.

Application

• Biodegradable Polymer Synthesis: Primary monomer for the production of aliphatic polyesters like poly(1,3-dioxepan-2-one), used in medical devices, drug delivery systems, and environmentally friendly plastics.
• Pharmaceutical Intermediates: Key starting material or intermediate in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs requiring hydrolyzable linkages.
• Controlled-Release Formulations: Used to create polymer matrices for the sustained release of agrochemicals, fertilizers, or pharmaceuticals.
• Specialty Adhesives & Coatings: Component in formulating high-performance, degradable adhesives and protective coatings.
• Tissue Engineering Scaffolds: Raw material for fabricating biocompatible and bioresorbable scaffolds in regenerative medicine.
• Chemical Research & Development: Valuable reagent in organic synthesis for ring-opening polymerization (ROP) studies and creating novel macromolecular architectures.

Basic Information

Product Name	1,3-Dioxepan-2-One
CAS No.	4427-94-5
Molecular Formula	C5H8O3
Molecular Weight	116.12 g/mol
Synonyms	1,3-Dioxepan-2-one; 2-Oxo-1,3-dioxepane; 7-Membered cyclic ethylene carbonate; ε-Caprolactone 1,3-dioxolane derivative; 2-Oxo-1,3-dioxacycloheptane; Hexamethylene carbonate (cyclic); 1,3-Dioxacycloheptan-2-one; PDXO (Polymer derivative abbreviation)
EINECS	224-598-8

Quality Control

Our 1,3-Dioxepan-2-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for polymer and pharmaceutical applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). This material may be moisture-sensitive; keep the container tightly sealed under an inert atmosphere such as nitrogen or argon for long-term storage to prevent hydrolysis or polymerization.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC/HPLC)	≥ 98.0 %
Water Content (KF)	≤ 0.5 %
Residue on Ignition	≤ 0.1 %
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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