Stibine Gas from Japan
Stibine (SbH3) is an extremely toxic, unstable gas used in trace analysis. As a hydride of nonmetal antimony, it enters HTS 2811.19.61 under other inorganic acids, per Chapter definitions excluding organometallics. Rare industrial use.
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
• Import certifications limited to labs with fume hood protocols
• Verify generator-produced vs. pure gas for classification
• Coordinate with CDC for select agent oversight