HS Code for Propylene oxide

Propylene oxide, or methyloxirane, is classified under HS code 2910.20. This code falls under Heading 2910, which encompasses epoxides, epoxyalcohols, epoxyphenols, and epoxyethers with a three-membered ring. Propylene oxide is a cyclic ether with a three-atom ring consisting of two carbon atoms and one oxygen atom. The classification is straightforward because 2910.20 is the specific subheading for methyloxirane. The Harmonized System prioritizes the epoxide functional group for this substance. It is a highly reactive flammable liquid used primarily as an intermediate in the production of polyether polyols for polyurethane plastics. Accurate classification is essential due to the hazardous nature of the chemical, which triggers specific shipping and handling requirements under international maritime and aviation codes. The chemical structure of propylene oxide makes it a chiral molecule, though the racemic mixture is the standard commercial product. In the HS nomenclature, the presence of the three-membered epoxy ring is the defining characteristic that excludes it from the general ether category (Heading 2909) and places it into Heading 2910. This distinction is vital for regulatory monitoring, as epoxides are often subject to stricter environmental and health safety controls than simple acyclic ethers.

Products Included

• Methyloxirane
• 1,2-Epoxypropane
• Propylene epoxide
• Racemic propylene oxide

Common Misclassification

Propylene oxide is sometimes misclassified under 2910.10, which is the code for ethylene oxide. While they are both epoxides, the HS system provides specific subheadings for each. It may also be confused with propylene glycol (2905.32), which is a downstream derivative but lacks the epoxy ring structure.

FAQ

What is the HS code for Propylene oxide?

The HS code for propylene oxide is 2910.20.

Why is it not classified as a regular ether?

Because it contains a three-membered ring (epoxide), the HS system requires it to be classified under Heading 2910 rather than the general ether heading 2909.