Technical Grade Dibutyltin Oxide from Japan
Technical grade dibutyltin oxide (95-98% purity) for industrial silicone curing applications. HTS 2931.90.90.21 classification applies to this organo-inorganic tin compound despite minor impurities, as it remains a separate chemically defined compound under Chapter 29 note (a).
Duty Rate — Japan → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Document impurity profile; levels must not render it a mixture under Chapter 29 exclusion notes
• Obtain end-user statements if transshipping to confirm non-consumer direct use (TSCA requirements)
• Use anti-caking stabilized packaging only if necessary for transport per Chapter 29 note (f)