Meaning
A harmonized system code specifies polypropylene in its primary form, specifically the homopolymer variant. The use of hs 3902.10 distinguishes pure polypropylene from copolymers that contain ethylene or other monomers. It is the standard trade heading for the most common grade of polypropylene used in injection moulding and fiber production.
Monomer Content
The material must consist almost entirely of propylene units to qualify for this classification. Customs inspectors look for data showing that no other monomer exceeds five percent of the total weight when verifying hs 3902.10 declarations. This purity is what gives the resin its characteristic stiffness and high melting point.
Propylene Polymerisation
The manufacturing process determines the final trade code assigned to the raw material. Since hs 3902.10 refers to the homopolymer, the production records must show that only propylene was fed into the reactor. Any intentional addition of a second monomer would shift the material into a different customs category.
Customs Category
Accurate declaration under this code ensures that the correct tariff rate is applied at the point of entry. Use of hs 3902.10 is required for shipments of virgin pellets, regrind or scrap that meet the homopolymer definition. Misclassifying a copolymer as a homopolymer can lead to significant fines and delays in the supply of raw materials for a moulding factory.
This trade code is the basis for all financial and regulatory reporting for standard polypropylene resin.
