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HSChapter 29
U.S. imports of thiuram mono-, di-, and tetrasulfides (HS 293030) totaled $339K in April 2026, traded with 6 countries.
Importers of Thiuram Mono-, Di-, and Tetrasulfides paid $78K in duties in April 2026 — an effective duty rate of 23% on $334K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataTetramethylthiuram monosulfide (TMTM, 2930303000) and the di- and tetrasulfide variants (2930306000) are primary vulcanization accelerators for the rubber industry, used in tire manufacturing, latex goods, and industrial rubber components. China is the leading US supplier by a wide margin, with Italy and Belgium representing European specialty producers. Importers should note that certain thiuram compounds also carry pesticide registrations as fungicides, which can trigger dual-use classification questions and EPA FIFRA compliance obligations depending on the declared end use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes — tetramethylthiuram disulfide (TMTD), for example, is registered as a fungicide in some markets while also serving as a rubber vulcanization accelerator. The correct HTS line depends on the principal use of the imported product. If imported for pesticidal use, EPA FIFRA registration requirements apply; if for rubber processing, those obligations generally do not. Importers should document the intended end use clearly in commercial invoices and consult a customs broker to confirm the appropriate classification.
As of current schedules, thiuram sulfides from Italy and Belgium are not subject to Section 301 tariffs, which apply to Chinese-origin goods. Importers sourcing from China should verify current Section 301 list applicability for the specific HTS line, as these measures can affect landed cost calculations significantly.
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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 |
|---|---|---|---|---|
| 2930306000 | THIURAM MONO-, DI- OR TETRASULFIDES | $280K | 26.06% | $72K |
| 2930303000 | TETRAMETHYLTHIURAM MONOSULFIDE | $59K | 10.00% | $6K |
THIURAM MONO-, DI- OR TETRASULFIDES
TETRAMETHYLTHIURAM MONOSULFIDE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2930303000 | TETRAMETHYLTHIURAM MONOSULFIDE | $229K |
| 2930306000 | THIURAM, DI- OR TETRASULFIDES | $161K |
TETRAMETHYLTHIURAM MONOSULFIDE
35.4K kg
THIURAM, DI- OR TETRASULFIDES
6.1K 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
| State | Imports | Exports | Balance |
|---|---|---|---|
| Ohio | $255K | $23K | -$232K |
| South Carolina | -- | $252K | +$252K |
| New York | -- | $99K | +$99K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | -- | $216K | +$216K |
| BUFFALO-NIAGARA FALLS, NY | -- | $138K | +$138K |
| CLEVELAND, OH | $130K | -- | -$130K |