Dipentamethylenethiuram Tetrasulfide (DPTT) from Japan
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 — Japan → United States
15%
Rate breakdown
9903.04.6211.3%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% 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