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SITCSection 5
U.S. imports of thiuram mono-, di-, or tetrasulfides (SITC 51543) totaled $694K in July 2026, traded with 6 countries.
Importers of Thiuram Mono-, Di-, or 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-, or Tetrasulfides imports of $694K in July 2026 ran 62% above the year-to-date monthly average of $429K.
Last updated: July 2026 dataThiuram sulfides occupy a specialized niche as rubber vulcanization accelerators and, in some formulations, as fungicidal active ingredients — thiuram disulfide (thiram) is a well-known example used in both rubber processing and seed treatment. The sulfur-chain length (mono-, di-, or tetra-) determines both the chemical reactivity and the end-use suitability, making precise product specification critical for buyers in the rubber and agrochemical industries. Importers should confirm whether the specific thiuram compound is subject to EPA pesticide registration requirements if it is formulated for agricultural use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
34 shipments/mo
Basic heading 409 of 465 in section 5
Basic heading 51543 · $694K of $28.9B
Thiuram monosulfides and disulfides are primarily used as ultra-accelerators in rubber vulcanization, imparting fast cure rates. Tetrasulfides are slower-acting and often preferred where controlled crosslink density is needed. Buyers should specify the exact compound to ensure the product meets their processing requirements.
Trade-remedy exposure depends on the specific compound and country of origin. Importers should check current antidumping and countervailing duty orders maintained by the Department of Commerce, as specialty chemical categories can be subject to such measures, particularly for shipments from major chemical-producing countries.
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Imports · July 2026
origin
China and Belgium together supply 75% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$694KYoY · Pro
Exports
$98KYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.