Pentane-Infused EPS Pellets
Polystyrene pellets impregnated with pentane blowing agent for steam expansion in foam molding applications. HTS 3903.11.00.00 covers these expandable primary forms distinguished from rigid polystyrene.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-expandable rigid polystyrene
Lack of blowing agent excludes from expandable subheading, moving to general PS category.
If aromatic polyester-modified polystyrene
Chemical modification classifies under unsaturated polyesters per note (a)(3).
If pre-expanded into cellular blocks
Expanded form constitutes finished cellular plastic article under 3923, not primary polymer.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Declare exact pentane content in documentation; excess may trigger hazmat regulations
• Use manufacturer's spec sheets confirming expandability to prevent misclassification as 3903.19 rigid PS
• Monitor for anti-dumping duties on EPS from certain origins like China or Korea
Related Products under HTS 3903.11.00.00
Styrofoam Beads EPS
Expandable polystyrene beads used for molding into foam products like packaging and insulation. These pre-expanded or unexpanded beads contain pentane as a blowing agent and fall under HTS 3903.11.00.00 as expandable polystyrene in primary form before molding or expansion into finished articles.
EPS Raw Expanded Beads
Pre-foamed expandable polystyrene beads in granular form for rotational molding and foam block production. Classified under 3903.11.00.00 as they remain in primary expandable form with blowing agent intact, prior to final shaping.
White EPS Pre-Puff Beads
White-colored expandable polystyrene pre-puff beads for producing lightweight foam packaging inserts. Falls under 3903.11.00.00 as primary form polymers before final expansion and molding processes.
Unexpanded EPS Granules
Unexpanded polystyrene granules containing blowing agent for in-plant expansion into foam blocks. HTS 3903.11.00.00 precisely covers these primary form expandable polystyrene materials.
High-Index EPS Beads H100
High expansion index (H100) polystyrene beads for thin-walled foam molding applications. Primary expandable form per 3903.11.00.00 before steam chest molding into custom shapes.
Recyclable EPS Expandable Pellets
Recycled-content expandable polystyrene pellets designed for sustainable foam production. Still classified under 3903.11.00.00 as meeting polymer content rules in primary expandable form.