p-Aminoazobenzenedisulfonic acid from Japan
p-Aminoazobenzenedisulfonic acid is a chemically defined diazo compound featuring an azo (-N=N-) linkage and two sulfonic acid groups, explicitly listed under HTS 2927.00.06.00. It serves as a key intermediate in the synthesis of direct dyes for textiles and paper.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide detailed chemical analysis (NMR, IR spectra) confirming azo structure and sulfonic acid purity to avoid reclassification as mixtures
• Include Safety Data Sheets (SDS) and ensure packaging complies with UN hazmat regulations for corrosive sulfonic acids
• Verify importer has proper TSCA registration as this compound requires EPA notification for U.S. manufacturing