Ion-exchangers; based on polymers of heading no. 3901 to 3913, in primary forms
In plain English
This category covers ion-exchangers that are made from specific polymers and are in their primary forms. These items are classified under a single subheading that includes all such products meeting these criteria.
6-digit subheadings (1)
Official HS 2022 subheading texts. National tariff schedules subdivide these further (8-10 digit lines) and set the actual duty rates.
Ion-exchangers; based on polymers of heading no. 3901 to 3913, in primary forms
Chapter 39 classification notes
Frequent misclassification in this chapter
Composite articles (e.g., plastic with textile lining) — classify by the material giving essential character. Silicone products are often misclassified here but belong in Chapter 39.
Classification certainty
The 6-digit level shown here is the internationally harmonised layer. Duty rates attach to national 8-10 digit tariff lines, which differ by country — use the duty calculator for lane estimates. For binding certainty, request a ruling from the destination customs authority.
Binding tariff ruling databaseOther headings in Chapter 39
- 3901 — Polymers of ethylene, in primary forms
- 3902 — Polymers of propylene or of other olefins, in primary forms
- 3903 — Polymers of styrene, in primary forms
- 3904 — Polymers of vinyl chloride or of other halogenated olefins, in primary…
- 3905 — Polymers of vinyl acetate or of other vinyl esters, in primary forms; …
- 3906 — Acrylic polymers in primary forms
- 3907 — Polyacetals, other polyethers and epoxide resins, in primary forms; po…
- 3908 — Polyamides in primary forms
- 3909 — Amino-resins, phenolic resins and polyurethanes, in primary forms
- 3910 — Silicones in primary forms
- 3911 — Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides…
- 3912 — Cellulose and its chemical derivatives, n.e.c. or included, in primary…
- 3913 — Natural polymers (e.g. alginic acid) and modified natural polymers (e.…
- 3915 — Waste, parings and scrap, of plastics
- 3916 — Monofilament of which any cross-sectional dimension exceeds 1mm, rods,…
- 3917 — Tubes, pipes and hoses and fittings thereof (for example, joints, elbo…
- 3918 — Floor coverings of plastics, self-adhesive or not, in rolls or tiles; …
- 3919 — Self-adhesive plates, sheets, film, foil, tape, strip and other flat s…
- 3920 — Plastics; plates, sheets, film, foil and strip (not self-adhesive); no…
- 3921 — Plastic plates, sheets, film, foil and strip n.e.c. in chapter 39
- 3922 — Sanitary ware; baths, shower-baths, sinks, wash-basins, bidets, lavato…
- 3923 — Plastic articles for the conveyance or packing of goods; stoppers, lid…
- 3924 — Tableware, kitchenware, other household articles and hygienic or toile…
- 3925 — Plastics; builders' wares n.e.c. or included
- 3926 — Articles of plastics and articles of other materials of heading no. 39…