Lanthanum-Dominant Didymium Carbonate Mixture
Didymium carbonate blend with lanthanum as chief component (La/Pr/Nd mix), used in glass coloring and decolorizing agents, fitting Chapter 28 inorganic rare-earth compounds. Under HTS 2846.90.80.70 for non-cerium rare-earth carbonate mixtures. White microcrystalline powder.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If forming double salts with inorganic bases
Chapter note specifies double or complex salts of Chapter 28 headings go to 2842, altering from simple carbonate mixtures.
If upon calcination to rare-earth oxides
Converted oxides classify under 2836 for rare-earth metal oxides, distinct from carbonate form.
If used in colloidal graphite production
Chapter exclusions send rare-earth compounds used as additives in graphite products to 3801.
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Import Tips & Compliance
• Submit compositional breakdown via ICP-MS reports; ensure no radioactive impurities per 2844 notes
• Common error: classifying as complex salts (2842)
Related Products under HTS 2846.90.80.70
Lanthanum-Dominant Rare Earth Carbonate Mixture
A chemically defined mixture of rare-earth carbonates where lanthanum carbonate is the predominant component, used primarily in the production of high-purity rare earth oxides for catalysts and phosphors. This falls under HTS 2846.90.80.70 as it is a mixture of rare-earth carbonates other than cerium carbonate with lanthanum predominant, per Chapter 28 notes on inorganic compounds. It is supplied as a fine white powder for industrial processing.
Lanthanum-Praseodymium-Neodymium Carbonate Mix
Industrial-grade mixture of rare-earth carbonates (La >50%, with Pr and Nd) used in manufacturing permanent magnets and ceramics, meeting Chapter 28 definitions for rare-earth compounds. Classified under HTS 2846.90.80.70 due to lanthanum predominance and exclusion from cerium carbonate mixtures. Typically packaged in 25kg drums for chemical processing.
High-Purity Lanthanum-Cerium-Free Carbonate Blend
Refined mixture of lanthanum-rich rare-earth carbonates (no cerium), applied in optical glass polishing and phosphors, chemically defined per Chapter 28 Note 1. HTS 2846.90.80.70 applies as 'other mixtures of rare-earth carbonates' with lanthanum predominant. Supplied as 99%+ purity powder.
Industrial Lanthanum-Rich REO Feedstock Carbonate
Lanthanum predominant carbonate mix serving as feedstock for rare-earth oxide (REO) production in catalysts and alloys. Complies with HTS 2846.90.80.70 as other rare-earth carbonate mixtures excluding cerium. Bulk powder for high-volume import.
Lanthanum-Yttrium Hybrid Carbonate Powder
Specialty mixture where lanthanum carbonate exceeds other RE carbonates including yttrium, used in advanced ceramics and electronics. HTS 2846.90.80.70 due to lanthanum predominance in non-cerium mixtures, per legal subheading notes.
Purified Lanthanum-Neodymium Carbonate for Catalysts
Purified blend of La and Nd carbonates (La > Nd) for automotive catalyst precursors, chemically defined rare-earth compound per Chapter notes. Fits HTS 2846.90.80.70 as lanthanum-predominant non-cerium carbonate mixture.