Black HN Base Diazo Salt from Mexico
Black HN Base is used in diazotization for deep black azo dyes on leather and paper. HTS 2927.00.40.00 applies via additional U.S. note 3 designation for this specific diazo compound. Chemically defined with safety additives per chapter allowances.
Duty Rate — Mexico → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include batch stability test results; poor stability leads to denial at entry
• Comply with REACH Annex XVII restrictions on certain azo colorants
• Declare as 'not for food contact' to avoid FDA scrutiny