Black HN Base Diazo Salt from China
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 — China → United States
31.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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