Loading...
HSChapter 29
U.S. imports of epoxides, epoxyalcohols, epoxyphenols & epoxyethers with a three-membered ring (other) (HS 291090) totaled $6.7M in May 2026, traded with 21 countries.
Importers of Epoxides, Epoxyalcohols, Epoxyphenols & Epoxyethers with a Three-Membered Ring (Other) paid $848K in duties in May 2026 — an effective duty rate of 18% on $4.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Epoxides, Epoxyalcohols, Epoxyphenols & Epoxyethers with a Three-Membered Ring (Other) imports of $6.7M in May 2026 ran 11% below the year-to-date monthly average of $7.5M.
Last updated: May 2026 dataChina is the primary US import source for this residual epoxide heading, which captures three-membered ring epoxide compounds not classified elsewhere — including butylene oxide (2910901000), aromatic epoxides (2910902000), and other non-aromatic variants (2910909100). These intermediates serve diverse roles as reactive diluents in epoxy formulations, chemical synthesis building blocks, and specialty polymer precursors. Correct classification between the aromatic and non-aromatic subheadings, and between butylene oxide and the NESOI basket, is essential because duty treatment and Section 301 exposure can differ across the four lines.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The distinction turns on whether the compound contains an aromatic ring system in its molecular structure. Aromatic epoxides classify under 2910902000, while non-aromatic variants fall under 2910909100 or 2910901000 for butylene oxide specifically. A chemical structure analysis or supplier's technical data sheet, reviewed with a licensed customs broker, is the recommended approach.
Yes — butylene oxide has its own dedicated 10-digit line (2910901000) rather than falling into the NESOI basket. Importers should confirm the specific isomer and purity of their product, as misclassification into the NESOI line could result in incorrect duty assessment or Section 301 exposure differences.
Supplier Network
Get discovered by U.S. importers searching for HS 291090 — Epoxides, Epoxyalcohols, Epoxyphenols & Epoxyethers with a Three-Membered Ring (Other). Be the first supplier listed.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $2.6M | $358K | -$2.2M |
| JAPAN | $1.2M | $347K | -$820K |
| ITALY | $1.1M | -- | -$1.1M |
| GERMANY | $476K | $382K | -$93K |
| KOREA, SOUTH | $507K | $154K | -$354K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2910902000 | AROMATIC EPOXIDES, ETC WITH A THREE-MEMBERED RNETC | $4.7M | 1.86% | 11.15% | $87K |
| 2910909100 | OTHER NON-AROMATIC EPOXIDES, ETC WITH A 3-MEM RING | $3.9M | 19.48% | 99.15% | $766K |
| 2910901000 | BUTYLENE OXIDE | $61K | 14.60% | 100.00% | $9K |
AROMATIC EPOXIDES, ETC WITH A THREE-MEMBERED RNETC
OTHER NON-AROMATIC EPOXIDES, ETC WITH A 3-MEM RING
BUTYLENE OXIDE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2910900005 | EPOXIDES, EPOXYALCHLS ETC W/3-MEMBER RNG ETC NESOI | $2.0M |
EPOXIDES, EPOXYALCHLS ETC W/3-MEMBER RNG ETC NESOI
191.9K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LOS ANGELES, CA | $4.3M | $314K | -$4.0M |
| LONG BEACH, CA | $1.3M | -- | -$1.3M |
| HOUSTON, TX | $722K | $194K | -$528K |