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HSChapter 29
U.S. imports of tetrahydrofuran (thf) (HS 293211) totaled $79K in April 2026, traded with 11 countries.
Importers of Tetrahydrofuran (THF) paid $11K in duties in April 2026 — an effective duty rate of 14% on $79K in dutiable value, based on actual customs collections rather than the published tariff schedule. Tetrahydrofuran (THF) imports of $79K in April 2026 ran 14% above the year-to-date monthly average of $69K.
Last updated: April 2026 dataTetrahydrofuran (THF) is a high-volume cyclic ether solvent widely used in pharmaceutical manufacturing, polymer production (particularly spandex/polyurethane via polytetramethylene ether glycol), and as a reaction medium in fine chemical synthesis. South Korea and Taiwan are the leading US import sources, reflecting the concentration of large-scale THF production capacity in East Asia. Classified under a single 10-digit line (2932110000), THF imports from China-origin sources may be subject to Section 301 tariffs, though South Korean and Taiwanese supply chains are not affected by those measures.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
South Korea and Taiwan host integrated petrochemical complexes with large-scale 1,4-butanediol (BDO) production, and THF is a co-product or derivative of BDO synthesis. This feedstock integration gives East Asian producers a significant cost advantage, making them the dominant export sources for the US market.
THF is a flammable liquid classified as a hazardous material under DOT regulations, requiring proper IMDG/IATA labeling for ocean and air shipments. Importers should also ensure Safety Data Sheets are current and that the commercial invoice accurately reflects the chemical name and CAS number (109-99-9) to support correct HTS classification under 2932110000.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| BRAZIL | -- | $278K | +$278K |
| CANADA | -- | $195K | +$195K |
| MEXICO | -- | $195K | +$195K |
| COSTA RICA | -- | $101K | +$101K |
| TAIWAN | $63K | -- | -$63K |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2932110000 | TETRAHYDROFURAN | $79K | 13.70% | $11K |
TETRAHYDROFURAN
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2932110000 | TETRAHYDROFURAN | $890K |
TETRAHYDROFURAN
290.9K 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 |
|---|---|---|---|
| NEW ORLEANS, LA | $8K | $358K | +$350K |
| PORT HURON, MI | -- | $170K | +$170K |
| HOUSTON, TX | -- | $74K | +$74K |