Product classification
HS code for Polyether: 3907.29
Polyethers other than polyacetals, and bis(polyoxyethylene) methylphosphonate, in primary forms.
Classification of polyether under HS 3907.29
Polyethers in primary forms are classified under HS code 3907.29. Chapter 39 of the Harmonized System covers plastics and articles thereof, with the first sub-chapter focusing on primary forms such as liquids, pastes, blocks, or granules. Heading 3907 includes polyacetals, other polyethers, and epoxide resins. The classification of a specific polyether depends on its chemical structure. While polyacetals are specifically called out in 3907.10, other polyethers fall into the 3907.2x category. Subheading 3907.29 is a residual category for "other" polyethers that do not meet the specific definitions of polyacetals or bis(polyoxyethylene) methylphosphonate. This classification requires the product to be in a primary form; once the polyether is converted into a finished article, such as a pipe or sheet, it moves to the respective headings for those articles. The term "primary forms" is strictly defined in Note 6 to Chapter 39, ensuring that only raw materials are captured here.
- Covers
- Polyethylene glycol (PEG) in primary forms
- Polypropylene glycol (PPG) in liquid or paste form
- Polytetramethylene ether glycol (PTMEG)
- Other polyethers used as chemical intermediates
- Also under 3907.29
- Covestro Desmophen
- BASF Pluracol
- Dow Chemical Voranol
- LyondellBasell Acclaim
Codes often confused with 3907.29
Common mistake. Polyethers are often misclassified under HS code 3907.10 if they are mistaken for polyacetals. They may also be confused with HS code 3824.99, which covers miscellaneous chemical products, but if the product is a polymer in primary form, Chapter 39 takes precedence. Additionally, if the polyether is an epoxide resin, it must be classified under 3907.30.
Top exporters and importers of HS 390729 (the code used for polyether), 2025
In 2025, the largest exporter of HS 390729 (the code used for polyether) in UN Comtrade data was China, with 26% of world exports; the largest importer in UN Comtrade data was China, with 8.3% 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 390729, not only polyether.
Top exporters 2025 · share of world exports
- 1 China $3.6B 26% of world exports
- 2 Netherlands $1.3B 9.3% of world exports
- 3 Germany $1.2B 9.0% of world exports
World total: $13.8B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $1.1B 8.3% of world imports
- 2 Germany $1.0B 7.6% of world imports
- 3 India $866M 6.3% of world imports
World total: $13.8B 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 polyether
Brazil splits HS 3907.29 into 11 NCM codes. Pick the one that matches your product:
- 3907.29.11Filled poly(phenylene oxide)
- 3907.29.12Unfilled poly(phenylene oxide)
- 3907.29.20Polytetramethylene ether glycol
- 3907.29.31Polyethylene glycol 400
- 3907.29.39Other polyether polyols
- 3907.29.41Poly(epichlorohydrin)
- 3907.29.42Epichlorohydrin-ethylene oxide copolymers
- 3907.29.49Other poly(epichlorohydrin) copolymers
- 3907.29.91Polyacetal polyether (PAPE)
- 3907.29.92Poly(oxyethylene) methallyl ether (HPEG)
- 3907.29.99Other polyethers in primary forms
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about polyether
What is the HS code for Polyether?
The HS code for Polyether is 390729 (Polyethers other than polyacetals, and bis(polyoxyethylene) methylphosphonate; in primary forms).
How do I classify Polyether for customs?
Polyether is classified under HS code 390729 — Polyethers other than polyacetals, and bis(polyoxyethylene) methylphosphonate; in primary forms. This is a 6-digit subheading level code.
What is the HS code for polyethers?
The HS code for polyethers (other than polyacetals) in primary forms is 3907.29.
Does this code include finished plastic parts?
No, this code only applies to primary forms like liquids or granules. Finished parts are classified by their shape or function in other headings of Chapter 39.
Which countries are the top exporters of polyether (HS 390729)?
In 2025, the top exporters of HS 390729 (the code used for polyether) in UN Comtrade data were China ($3.6B, 26% of world exports), the Netherlands ($1.3B) and Germany ($1.2B). World exports came to about $13.8B, 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 polyether (HS 390729)?
In 2025, the top importers of HS 390729 (the code used for polyether) in UN Comtrade data were China ($1.1B, 8.3% of world imports), Germany ($1.0B) and India ($866M). World imports came to about $13.8B, 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 Polyether the same in all countries?
The base HS code 390729 for Polyether 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 polyether in Brazil?
Brazil splits HS 390729 into 11 NCM codes, so the right one for polyether depends on the product's details: 3907.29.11 (Filled poly(phenylene oxide)), 3907.29.12 (Unfilled poly(phenylene oxide)), 3907.29.20 (Polytetramethylene ether glycol), 3907.29.31 (Polyethylene glycol 400), 3907.29.39 (Other polyether polyols), 3907.29.41 (Poly(epichlorohydrin)), and more.