Thorium Nitrate from China
Thorium nitrate (Th(NO3)4) is a chemically defined inorganic salt of thorium, used in chemical research and as a precursor for thorium-based ceramics. It falls under HTS 2844.30.10.00 as a thorium compound, specifically covered by Chapter 28 notes for metal salts and radioactive element compounds.
Duty Rate — China → United States
18%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Obtain NRC or agreement state license prior to import due to thorium's radioactive nature; submit Form 741 for reporting
• Include detailed chemical composition, activity levels, and safety data sheets in documentation to avoid customs delays
• Verify exemption status for low-specific-activity thorium; common pitfall is failing radiation transport regulations under DOT