ε-Caprolactone

ε-Caprolactone (CAS 502-44-3) is a cyclic ester also known as 2-oxepanone, 6-hexanolide, and oxepan-2-one. It carries no assigned E-code. It is commercially available under several synonyms including caprolactone and is classified under HS code 29322090.

In polymer chemistry, ε-caprolactone undergoes ring-opening polymerization to produce polycaprolactone, a biodegradable thermoplastic used in packaging films and medical-grade materials. In food and fragrance applications, it contributes creamy, coconut-like aroma profiles at controlled concentrations, functioning as a flavorant and fragrance intermediate.

ε-Caprolactone is supplied as a high-purity liquid grade meeting REACH registration requirements for supply within the EU. It is relevant to food-contact and cosmetic formulation workflows where FCC-grade documentation may be required. Standard packaging formats include drums and IBC containers, with documentation available upon request.