Primuline Base from Mexico
Primuline base is the primary aromatic amine derivative of benzothiazole used as the key intermediate for primuline direct dyes, explicitly listed under HTS 2934.20.3000. This chemically defined compound contains the unfused benzothiazole ring system required by the heading.
Duty Rate — Mexico → United States
15.8%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Reference historical dye intermediate status and CAS registry in commercial invoices
• Include synthesis pathway documentation showing benzothiazole ring derivation
• Distinguish from finished primuline dye (3204) by providing purity >95% specs