Thorium Tetrafluoride Crystals
ThF4 single crystals grown by Czochralski method for optical research. As <2.5g cultured crystals of radioactive compounds, HTS 2844.30.50 applies per Chapter note exclusions. Used in fluoride glass studies.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If crystals >=2.5g each
Larger cultured halide crystals exclude to 3824 regardless of radioactivity.
If finished optical elements
Fabricated optical components from ThF4 classify by function in Chapter 90.
If non-radioactive fluorides
Ammonium/metal fluorides without radioactivity fall under 2826 per Chapter note 6.
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Import Tips & Compliance
• Specify crystal weight per note 2(e); use laser marking for identification; provide growth method documentation
Related Products under HTS 2844.30.50
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Powdered UO2 derived from uranium depleted in U235, used in nuclear fuel fabrication and radiation shielding. It falls under HTS 2844.30.50 as a compound of uranium depleted in U235, distinct from enriched uranium or other isotopes. This chemically defined inorganic compound meets Chapter 28 criteria for classification here.
Thorium Nitrate Powder
Th(NO3)4 anhydrous powder used in thorium-based nuclear fuels and high-temperature ceramics. Classified in HTS 2844.30.50 as a compound of thorium, an alpha-emitting radioactive element per heading 2844 scope. Excludes organo-inorganic compounds covered elsewhere.
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Thorium Oxide Ceramic Pellets
Sintered ThO2 pellets for mixed oxide (MOX) fuel or gas mantle production. As ceramic products containing thorium compounds with >74 Bq/g activity, classified under HTS 2844.30.50 per note 4(d). Excludes optical elements or luminophores.
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Thorium Metal Powder
Pyrophoric thorium powder (99.9% Th-232) for research and alloying applications. Elemental thorium qualifies under HTS 2844.30.50 as covered by 'thorium and its compounds' in heading 2844.30. Stored under inert atmosphere.