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HSChapter 29
U.S. imports of trimethylolpropane (tmp) (HS 290541) totaled $2.8M in April 2026, traded with 6 countries.
Importers of Trimethylolpropane (TMP) paid $414K in duties in April 2026 — an effective duty rate of 15% on $2.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataCommercially known as trimethylolpropane (TMP), 2-ethyl-2-(hydroxymethyl)propane-1,3-diol is a trifunctional alcohol that serves as a crosslinker and polyol building block in alkyd resins, polyurethane coatings, and synthetic lubricants. Sweden and Germany are the leading US suppliers, reflecting the dominance of a small number of European integrated chemical producers in global TMP capacity. China is also a notable source, and importers sourcing from there should be aware of potential Section 301 tariff exposure. TMP's single 10-digit line (2905410000) simplifies classification, but purity grade and particle size (flake versus molten) can affect handling logistics and end-use performance.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
TMP is commercially available as white crystalline flakes or as a molten liquid shipped in heated ISO tanks. Both forms classify identically to 2905410000 — physical form does not change the HTS classification. However, molten shipments require specialized heated container equipment and may face additional port-handling requirements, so logistics planning should account for the form specified in the purchase contract.
TMP production requires formaldehyde and n-butyraldehyde as feedstocks and is capital-intensive, limiting the number of viable global producers. Sweden and Germany host two of the largest integrated producers. This concentration means that a single plant outage can tighten global supply quickly. US importers should monitor producer maintenance schedules and consider forward purchasing or dual-sourcing strategies to manage availability risk.
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2905410000 | 2-ETHYL-2-(HYDROXYMETHYL)PROPANE-1,3-DIOL | $2.8M | 14.74% | $414K |
2-ETHYL-2-(HYDROXYMETHYL)PROPANE-1,3-DIOL
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2905410000 | 2-ETHYL-2-(HYDROXYMETHYL)PROPANE-1,3-DIOL | $569K |
2-ETHYL-2-(HYDROXYMETHYL)PROPANE-1,3-DIOL
214.9K 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
Monthly import values over time
| State | Imports | Exports | Balance |
|---|---|---|---|
| Ohio | $1.3M | $257K | -$1.1M |
| New Jersey | $425K | -- | -$425K |
| Texas | $237K | $175K | -$62K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| DETROIT, MI | $1.2M | -- | -$1.2M |
| NEWARK, NJ | $837K | -- | -$837K |
| HOUSTON, TX | $237K | $175K | -$62K |