Black HN Base Diazo Salt from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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