Fast Red B Base Diazonium Salt from Mexico
Fast Red B Base is a diazonium salt used as a diazo component in the production of azo dyes for textile and leather coloring. It falls under HTS 2927.00.40.00 as a product described in additional U.S. note 3 to section VI, which covers specific diazo- and azo-compounds regulated for dye manufacturing. This chemically defined organic compound reacts with couplers to form vibrant red dyes.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6093.5%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
• Verify compliance with additional U.S. note 3 to section VI and obtain any required TSCA certifications for chemical import
• Include detailed chemical composition and Safety Data Sheets (SDS) in documentation to avoid customs delays
• Ensure stabilizers are only for safety/transport as per chapter note (g) to prevent reclassification