Dipentamethylenethiuram Tetrasulfide (DPTT) from Mexico
DPTT functions as both sulfur donor and accelerator in low-sulfur rubber systems, particularly for heat-resistant compounds. As a thiuram polysulfide organo-sulfur compound for rubber processing, it classifies under HTS 2930.90.92.31.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Declare sulfur content precisely as it affects both classification and hazardous materials shipping
• Provide rubber formulation examples showing principal processing use
• Monitor for EU SVHC listing changes affecting import notifications