Black HN Base Diazo Salt from Germany
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 — Germany → United States
15%
Rate breakdown
9903.04.628.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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