Product classification

HS code for Polysulphone: 3911.90

Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39, in primary forms.

Classification of polysulphone under HS 3911.90

Polysulphone is classified under HS code 3911.90. This classification is found in Chapter 39, which covers plastics and articles thereof. Heading 3911 is a specific category for petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones, and other products of chemical synthesis not elsewhere specified or included, in primary forms. Polysulphones are a family of high-performance thermoplastics characterized by their high thermal, oxidative, and hydrolytic stability. The subheading 3911.90 is the "other" category within this heading, used for polysulphones and similar synthetic polymers that do not fall under the more specific subheadings like 3911.10 (petroleum resins). According to Note 6 to Chapter 39, "primary forms" refers to liquids and pastes (including dispersions and solutions) or blocks of irregular shape, lumps, powders, granules, flakes, and similar bulk forms. Therefore, polysulphone resin imported in pellet or powder form for injection molding or extrusion is correctly classified here. Once the polysulphone has been converted into a finished article, such as a specialized pipe or a laboratory component, it is classified according to the nature of the article or under the general headings for articles of plastics (3917 to 3926).

Covers
  • Polysulphone (PSU) resin in pellets
  • Polyethersulphone (PES) in primary forms
  • Polyphenylsulfone (PPSU) granules
  • Polysulphone powder for industrial use
  • Liquid polysulphone dispersions
Also under 3911.90
  • Solvay Udel PSU
  • BASF Ultrason PES
  • Arkema Kynar PVDF (high-performance polymer)
  • Toray PPSU

Codes often confused with 3911.90

Common mistake. Polysulphone is sometimes misclassified under HS code 3907.20, which covers other polyethers. While polysulphones contain ether groups, they are specifically named in heading 3911, and according to GRI 1, the specific heading takes precedence. Another common error is using 3909.31 for amino-resins or 3911.10 for petroleum resins, which are chemically distinct from the sulphone-based polymer structure.

39.11Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39, in primary forms3909.31Amino-resins; n.e.c. in heading no. 3909, in primary forms, poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI)3911.10Petroleum resins, coumarone, indene or coumarone-indene resins and polyterpenes; in primary forms

Top exporters and importers of HS 391190 (the code used for polysulphone), 2025

In 2025, the largest exporter of HS 391190 (the code used for polysulphone) in UN Comtrade data was Germany, with 20% of world exports; the largest importer in UN Comtrade data was China, with 15% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 391190, not only polysulphone.

Top exporters 2025 · share of world exports

  1. 1 Germany $1.0B
  2. 2 United States $872M
  3. 3 Japan $583M

World total: $5.2B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 China $769M
  2. 2 Germany $493M
  3. 3 United States $469M

World total: $5.2B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for polysulphone

Brazil splits HS 3911.90 into 13 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about polysulphone

What is the HS code for Polysulphone?

The HS code for Polysulphone is 391190 (Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39; in primary forms). The HS code for Polysulphone in primary forms (like granules or powder) is 3911.90.

How do I classify Polysulphone for customs?

Polysulphone is classified under HS code 391190 — Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39; in primary forms. This is a 6-digit subheading level code.

What are considered primary forms for Polysulphone?

Primary forms include liquids, pastes, blocks, lumps, powders, granules, and flakes. If the material is shaped into a tube or sheet, it moves to headings like 3917 or 3920.

Which countries are the top exporters of polysulphone (HS 391190)?

In 2025, the top exporters of HS 391190 (the code used for polysulphone) in UN Comtrade data were Germany ($1.0B, 20% of world exports), the United States ($872M) and Japan ($583M). World exports came to about $5.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of polysulphone (HS 391190)?

In 2025, the top importers of HS 391190 (the code used for polysulphone) in UN Comtrade data were China ($769M, 15% of world imports), Germany ($493M) and the United States ($469M). World imports came to about $5.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Polysulphone the same in all countries?

The base HS code 391190 for Polysulphone is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for polysulphone in Brazil?

Brazil splits HS 391190 into 13 NCM codes, so the right one for polysulphone depends on the product's details: 3911.90.11 (Filled modified polyterpenes, not with phenols), 3911.90.12 (Filled polyetherimides (PEI) and copolymers), 3911.90.13 (Filled polyethersulphones (PES) and copolymers), 3911.90.14 (Filled poly(phenylene sulphide)), 3911.90.19 (Other filled polysulphones and similar polymers), 3911.90.21 (Unfilled modified polyterpenes, not with phenols), and more.