Zirconium Subcarbonate Crystals
Crystalline zirconium subcarbonate, a partially carbonated form used in analytical chemistry and as a reagent. It is a chemically defined compound under HTS 2836.99.50.10, fitting the carbonates subheading excluding peroxo forms. These crystals are employed in lab synthesis of metal organics.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If forming complex salts with other inorganics
Double or complex salts of inorganic bases are classified in 2842 per Chapter 28 notes.
If in retail lab kits
Prepared for retail sale as lab chemicals falls under 3824, excluding pure Chapter 28 compounds.
If misidentified as disodium carbonate
Commercial ammonium carbonate or similar doubles salts go to specific 2836 subheadings, but zirconium is distinctly 'other'.
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Import Tips & Compliance
• Include lab-grade purity certification (>99%) and avoid bulk packaging that mimics industrial mixtures; declare as 'chemically defined' to prevent shift to 3824
• Watch for REACH-like US regs on zirconium compounds
Related Products under HTS 2836.99.50.10
Zirconium Carbonate Powder
Pure zirconium carbonate (Zr(CO3)2) in fine powder form, a chemically defined inorganic compound used in chemical synthesis and as a precursor for zirconia ceramics. It falls under HTS 2836.99.50.10 as a zirconium carbonate, distinct from peroxocarbonates or stabilized varieties. This white, odorless powder is soluble in acids and applied in high-temperature refractories.
Basic Zirconium Carbonate
Basic zirconium carbonate (Zr(OH)2·2ZrCO3), a hydrated compound used as a pigment and coating agent in paper manufacturing. Classified under HTS 2836.99.50.10 as a zirconium carbonate per subheading for other carbonates. It provides opacity and whiteness in specialty paper products.
Hydrated Zirconium Carbonate
Hydrated zirconium carbonate (ZrCO3·xH2O), supplied as a slurry or powder for water treatment and flame retardants. Falls under HTS 2836.99.50.10 as other zirconium carbonates, chemically defined inorganic salt. It decomposes to zirconia upon heating for refractory applications.
Zirconium Ammonium Carbonate
Double salt of zirconium ammonium carbonate, used in textile dyeing and leather tanning processes. Classified as HTS 2836.99.50.10 for zirconium carbonates, applying Chapter 28 note on ammonium salts in 2826-2842 extended to carbonates. It acts as a mordant for colorfast dyes.
Technical Grade Zirconium Carbonate
Technical-grade zirconium carbonate for ceramic glaze production, containing minor impurities but chemically defined. Under HTS 2836.99.50.10 as other zirconium carbonates, excluded from Chapter 31 notes. It fluxes glazes at high firing temperatures.
Nano-Zirconium Carbonate Particles
Nanoparticulate zirconium carbonate (<100nm) for advanced catalysts and coatings. Remains under HTS 2836.99.50.10 as chemically defined carbonate, not doped electronics per Chapter note. Enhances catalytic efficiency in petrochemical processes.