Propene oxide

Propylene oxide (CAS 75-56-9), also known as epoxypropane, methyloxirane, and oxypropylene, is a reactive cyclic ether with the molecular formula C3H6O. It carries no assigned E-code and is classified under HS code 29102000 within the monomers and building blocks category.

In polyurethane and polyol production, propylene oxide undergoes ring-opening polymerization to extend polymer chains, forming the backbone of flexible and rigid foam systems. As an antimicrobial fumigant, it alkylates microbial DNA and proteins, disrupting cellular function in food and pharmaceutical sterilization processes.

Propylene oxide is supplied as an anhydrous liquid grade compliant with REACH registration requirements. Packaging typically consists of pressurized drums or isotanks given its low boiling point and flammability classification. Buyers should confirm purity specifications and SDS documentation prior to procurement, as handling requires compliance with applicable ADR transport regulations.