1,2-Benzisothiazolin-3-one (BIT) from Mexico
1,2-Benzisothiazolin-3-one is a heterocyclic organic compound featuring a benzisothiazole ring structure, classified under HTS 2934.99.09.00 as an aromatic heterocyclic compound. It is primarily used as a broad-spectrum antimicrobial preservative in industrial applications.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.60100%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
• Provide detailed chemical composition certificates confirming purity >98% to avoid reclassification as mixtures under Chapter 38
• Include Safety Data Sheets (SDS) and end-use declarations to comply with EPA biocide import regulations
• Ensure proper Hazard Class 8 labeling for corrosive properties to prevent customs delays