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HSChapter 29
U.S. imports of tributyltin compounds (HS 293120) totaled $3K in June 2026, traded with 3 countries.
Tributyltin Compounds imports of $3K in June 2026 ran 78% below the year-to-date monthly average of $13K.
Tributyltin (TBT) compounds, classified under a single line (2931200000), are organotin biocides whose use in marine antifouling paints has been globally restricted under the International Maritime Organization's AFS Convention, sharply narrowing their commercial application to specialty industrial uses such as wood preservation and certain PVC stabilizers. India leads US imports under this heading, with Ukraine and China also supplying the market. EPA regulates TBT compounds under TSCA, and importers should confirm that the intended application does not conflict with existing US restrictions on TBT-based antifouling coatings.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The use of TBT-based antifouling paints on most vessel types is prohibited under the IMO's International Convention on the Control of Harmful Anti-fouling Systems (AFS Convention), to which the US is a party. EPA has also restricted TBT antifouling uses domestically. Importers seeking to use TBT compounds in antifouling applications should consult EPA's Office of Pesticide Programs and confirm that any intended use has a current, valid registration before importing.
Residual commercial demand for TBT compounds is concentrated in industrial wood preservation, certain PVC heat stabilizer formulations, and specialty catalyst applications. These uses remain subject to EPA TSCA oversight and, where the compound functions as a pesticide, FIFRA registration requirements. Importers should clearly document the specific end use on commercial invoices to facilitate accurate classification and regulatory review.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $3K | -- | -$3K |
| DOMINICAN REPUBLIC | -- | $3K | +$3K |
| BRAZIL | -- | -- | -- |
| SOUTH AFRICA | -- | -- | -- |
| UKRAINE | -- | -- | -- |
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 |
|---|---|---|---|---|---|
| 2931200000 | TRIBUTYLTIN COMPOUNDS | $3K | 38.71% | 100.00% | $1K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2931200000 | TRIBUTYLTIN COMPOUNDS | $3K |
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
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHICAGO, IL | $3K | -- | -$3K |
| MIAMI INTERNATIONAL AIRPORT, FL | -- | $3K | +$3K |
| NEWARK, NJ | -- | -- | -- |