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HSChapter 29
U.S. imports of thiuram mono-, di-, and tetrasulfides (HS 293030) totaled $694K in July 2026, traded with 6 countries.
Importers of Thiuram Mono-, Di-, and Tetrasulfides paid $119K in duties in July 2026 — an effective duty rate of 18% on $662K in dutiable value, based on actual customs collections rather than the published tariff schedule. Thiuram Mono-, Di-, and Tetrasulfides imports of $694K in July 2026 ran 62% above the year-to-date monthly average of $429K.
Last updated: July 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.
34 shipments/mo
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.
Subheading 4 of 8 in heading 2930
Subheading 293030 · $694K of $270.0M
ImportsExports
Imports
$694KYoY · Pro
Exports
$98KYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
China and Belgium together supply 75% of it.
customs district
destination
entry
rate provision · imports
4.6% enters free of duty; the effective duty rate is 17.09%.
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 |
|---|---|---|---|---|---|
| 2930306000 | Thiuram Mono-, Di- or Tetrasulfides | $577K | 18.36% | 94.44% | $106K |
| 2930303000 | Tetramethylthiuram Monosulfide | $116K | 10.84% | 100.00% | $13K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2930306000 | Thiuram, Di- or Tetrasulfides | $83K |
| 2930303000 | Tetramethylthiuram Monosulfide | $15K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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