Product classification

HS code for Coumarone-indene resin: 3911.10

Petroleum resins, coumarone, indene or coumarone-indene resins and polyterpenes, in primary forms.

Classification of coumarone-indene resin under HS 3911.10

Coumarone-indene resin is classified under HS code 3911.10. This falls under Chapter 39, which covers plastics and articles thereof. Heading 3911 is dedicated to "Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones and other products specified in Note 3 to this Chapter, not elsewhere specified or included, in primary forms." Coumarone-indene resins are coal-tar derived synthetic resins produced by the polymerization of the coumarone and indene fractions of coal-tar light oils. They are widely used in the manufacture of floor tiles, adhesives, and coatings. The "primary forms" designation is crucial; it refers to liquids and pastes, including dispersions (emulsions and suspensions) and solutions, or blocks of irregular shape, lumps, powders, granules, flakes, and similar bulk forms. As a synthetic polymer not specifically mentioned in earlier headings of Chapter 39, it is correctly placed in 3911. This classification is supported by Chapter Note 3 to Chapter 39, which defines the scope of products covered under heading 3911. These resins are generally low molecular weight polymers and are often used as tackifiers or processing aids in rubber compounding. Because they are chemically distinct from the more common polyethylenes or polypropylenes found in earlier headings, they require this specific classification. The 3911.10 subheading specifically isolates the coumarone, indene, or coumarone-indene resins from other petroleum-based resins.

Covers
  • Coumarone resins in primary forms
  • Indene resins in primary forms
  • Mixed coumarone-indene resins
  • Polymerized coal-tar resins
Also under 3911.10
  • Neville Chemical Coumarone-Indene Resins
  • Eastman Hydrocarbon Resins
  • Kolon Industries Petroleum Resins
  • Arizona Chemical Polyterpene Resins

Codes often confused with 3911.10

Common mistake. A common misclassification occurs with HS code 3907.91 or 3907.99 (other polyesters) because of the resinous nature of the product. However, coumarone-indene resins are chemically distinct from polyesters. Another error is using 2707.99, which covers other products of the distillation of high temperature coal tar. While the raw materials come from coal tar, once they are polymerized into a resin, they must be classified in Chapter 39. Additionally, if the resin is already shaped into a finished product, such as a floor tile, it would move to 3918 instead of 3911.

3907.91Polyesters; n.e.c. in heading no. 3907, unsaturated, in primary forms3907.99Polyesters; n.e.c. in heading no. 3907, saturated, in primary forms2707.99Oils and other products of the distillation of high temperature coal tar; n.e.c. in heading no. 270739.18Floor coverings of plastics, self-adhesive or not, in rolls or tiles; wall or ceiling coverings of plastics, in rolls of a width not less than 45cm39.11Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39, in primary forms

Top exporters and importers of HS 391110 (the code used for coumarone-indene resin), 2025

In 2025, the largest exporter of HS 391110 (the code used for coumarone-indene resin) in UN Comtrade data was China, with 35% of world exports; the largest importer in UN Comtrade data was the United States, with 7.7% 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 391110, not only coumarone-indene resin.

Top exporters 2025 · share of world exports

  1. 1 China $689M
  2. 2 South Korea $300M
  3. 3 Netherlands $192M

World total: $2.0B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $157M
  2. 2 Germany $146M
  3. 3 France $143M

World total: $2.1B 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 coumarone-indene resin

Brazil splits HS 3911.10 into 3 NCM codes. Pick the one that matches your product:

  • 3911.10.10Filled petroleum, coumarone-indene, terpene resins
  • 3911.10.21Hydrogenated petroleum resins, Gardner under 3
  • 3911.10.29Other unfilled petroleum/coumarone/terpene resins

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

Questions about coumarone-indene resin

What is the HS code for Coumarone-indene resin?

The HS code for Coumarone-indene resin is 391110 (Petroleum resins, coumarone, indene or coumarone-indene resins and polyterpenes; in primary forms). The HS code for coumarone-indene resin in primary forms is 3911.10.

How do I classify Coumarone-indene resin for customs?

Coumarone-indene resin is classified under HS code 391110 — Petroleum resins, coumarone, indene or coumarone-indene resins and polyterpenes; in primary forms. This is a 6-digit subheading level code.

What are primary forms in HS classification?

Primary forms include liquids, pastes, blocks, lumps, powders, granules, and flakes. Once the resin is molded or extruded into a specific shape, it is no longer in a primary form.

Which countries are the top exporters of coumarone-indene resin (HS 391110)?

In 2025, the top exporters of HS 391110 (the code used for coumarone-indene resin) in UN Comtrade data were China ($689M, 35% of world exports), South Korea ($300M) and the Netherlands ($192M). World exports came to about $2.0B, 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 coumarone-indene resin (HS 391110)?

In 2025, the top importers of HS 391110 (the code used for coumarone-indene resin) in UN Comtrade data were the United States ($157M, 7.7% of world imports), Germany ($146M) and France ($143M). World imports came to about $2.1B, 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 Coumarone-indene resin the same in all countries?

The base HS code 391110 for Coumarone-indene resin 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 coumarone-indene resin in Brazil?

Brazil splits HS 391110 into 3 NCM codes, so the right one for coumarone-indene resin depends on the product's details: 3911.10.10 (Filled petroleum, coumarone-indene, terpene resins), 3911.10.21 (Hydrogenated petroleum resins, Gardner under 3), 3911.10.29 (Other unfilled petroleum/coumarone/terpene resins).