Zinc 2-Mercaptobenzothiazole (ZMBT) from Mexico
ZMBT acts as a medium-speed rubber accelerator with excellent dispersion properties, used in tire and mechanical goods production. Classified in HTS 2930.90.92.31 as its organo-sulfur metal coordination compound principal use is rubber vulcanization per chapter coordination compound rules.
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
• Metal content analysis required; declare zinc percentage accurately for duty computation
• Use UN-approved packaging for this combustible solid (UN 3077)
• Distinguish from rubber protective agents which classify under 3812.10