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HSChapter 29
U.S. imports of acyclic ethers (excluding diethyl ether) (HS 290919) totaled $8.4M in June 2026, traded with 26 countries.
Importers of Acyclic Ethers (Excluding Diethyl Ether) paid $874K in duties in June 2026 — an effective duty rate of 15% on $5.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Methyl tertiary-butyl ether (MTBE, 2909191400) is the commercially dominant compound in this heading, historically used as a gasoline oxygenate, though its domestic use has declined sharply due to groundwater contamination concerns — making import volumes sensitive to regional fuel-blending regulations. The heading also covers ethers of monohydric alcohols (2909191800), triethylene glycol dichloride (2909193000), and ethers of polyhydric alcohols (2909196000), which serve as solvents, plasticizer intermediates, and chemical building blocks. India and Japan are leading suppliers, with China also a significant source. Chinese-origin acyclic ethers may be subject to Section 301 tariffs, and importers should verify applicability at the specific 10-digit level.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
MTBE itself is not federally banned for import, but its use as a fuel additive is effectively prohibited in many states due to groundwater contamination concerns. Importers should confirm the intended end-use and applicable state regulations before committing to a shipment, as downstream distribution may be restricted even if CBP entry is straightforward.
The distinction turns on the alcohol precursor: ethers derived from polyhydric alcohols (e.g., glycols) are classified under 2909196000, while those from monohydric alcohols fall under 2909191800. The chemical structure of the alcohol moiety — specifically the number of hydroxyl groups — is the controlling classification criterion.
Monthly import values over time
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2909191800 | ETHERS OF MONOHYDRIC ALCOHOLS, NESOI | $4.5M | 4.78% | 41.03% | $213K |
| 2909191400 | METHYL TERTIARY-BUTYL ETHER (MTBE) | $3.2M | 15.15% | 100.00% | $479K |
| 2909196000 | ETHERS OF POLYHYDRIC ALCOHOLS & THEIR DERIVATIVES | $795K | 22.99% | 100.81% | $183K |
| 2909193000 | TRIETHYLENE GLYCOL DICHLORIDE | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2909191800 | ETHERS OF MONOHYDRIC ALCOHOLS, NESOI | $133.8M |
| 2909191400 | METHYL TERTIARY-BUTYL ETHER (MTBE) | $121.2M |
| 2909196000 | ETHERS OF POLYHYDRIC ALCOHOLS & THEIR DERIVATIVES | $71K |
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
BENZENE
HS 290220
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
HETEROCYCLIC COMP WITH UNFUSED PYRAZOLE RING NESOI
HS 293319
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| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $3.1M | $253.1M | +$250.0M |
| New Jersey | $2.6M | $125K | -$2.4M |
| North Carolina | $80K | $749K | +$668K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $3.1M | $252.7M | +$249.6M |
| NEWARK, NJ | $3.3M | -- | -$3.3M |
| NORFOLK-NEWPORT NEWS, VA | $573K | $493K | -$81K |