Thorium Nitrate Crystals
Crystalline Th(NO3)4·4H2O used in gas mantles and catalyst production. Classified in HTS 2844.30.20 for thorium compounds, meeting Chapter 28 definitions for radioactive isotopes.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing uranium-233
U-233 compounds and mixtures classify under 2844.20, separate from thorium.
If non-radioactive rare earth nitrates
Non-thorium nitrates like cerium nitrate fall in 2834; radioactivity determines Chapter 28.
If in laboratory diagnostic kits
Thorium in prepared lab reagents may classify as diagnostic reagents in 3822.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include thorium content analysis (>99% purity) in commercial invoice
• NRC Form 741 required for thorium shipments over 100g
Related Products under HTS 2844.30.20
Depleted Uranium Metal Ingots
Cast ingots of depleted uranium metal (DU <0.711% U235) for machining into shielding or counterweights. Falls under HTS 2844.30.20 as a compound of depleted uranium per heading 2844 notes.
Thorium Oxide Powder
ThO2 powder for high-temperature ceramics and nuclear fuel kernels. Classified under HTS 2844.30.20 as a thorium compound per Chapter 28 note 4.
Thorium Metal Turnings
Machining turnings and chips of thorium metal for recycling. HTS 2844.30.20 includes thorium and its compounds/residues.
Depleted Uranium Silicide Powder
U3Si2 powder for advanced nuclear fuel research. Classified as uranium compound in HTS 2844.30.20.
Ammonium Thorium Fluoride
NH4ThF5 intermediate for thorium purification. HTS 2844.30.20 for thorium compounds.
Uranium Phosphide Powder
U3P4 powder for specialized nuclear applications. Under HTS 2844.30.20.