Hexamethylenetetramine with Anti-Caking Agent from Japan
Hexamine powder treated with 0.15% silica anti-caking agent for free-flowing properties. Allowed under HTS 2933.69.5000 per Chapter 29 note (f) as stabilizer necessary for transport.
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
• Declare exact anti-caking percentage; >1% risks 3824 classification as mixture
• Silica type (precipitated vs fumed) affects food contact approval status
• Particle size distribution (90% through 20 mesh) important for resin blending