Technical Grade 1-Amino-8-Hydroxy-4,6-Naphthalenedisulfonic Acid Na Salt from Japan
Technical grade version of the monosodium salt, containing allowed stabilizers per chapter note (f), still classified as the pure compound under HTS 2922.21.2500. Features amino-hydroxy oxygen functions on naphthalene with disulfonic sodium salt. Used in bulk for azo dye manufacturing.
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
• Document stabilizer type and percentage to comply with note (f) allowances; test for anti-dusting agents that might trigger note (g)
• Pitfall: over 1% impurities could reclassify as 3824 product