Fast Black Base E Salt from Canada
Fast Black Base E Salt is a double diazo fast color salt producing deep black shades for wool and silk dyeing with excellent wet fastness. Used in high-end textile applications requiring durability. HTS 2927.00.30.00 classification for fast color salts.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide fastness test results (ISO standards) proving 'fast color' designation
• Diazo salts require acidic packaging; document stabilizer composition
• Avoid bulk mixtures; pure compounds stay in Chapter 29, preparations go to 3824