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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing sulfate impurities
Complex salts with sulfate groups fall under heading 2833 for aluminum sulfate and poly(sulfates), per Chapter 28 note on double salts.
If for use as inorganic luminophore pigment
Chapter 28 Note 2(e) excludes luminophores used as pigments, directing to heading 3206.
If classified as complex nonmetal-metal acid
Per Chapter 28 note, certain complex acids of subchapter II nonmetals with subchapter IV metals go to 2811.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Label with exact chemical formula and CAS number (e.g
• 84968-25-2) for customs verification; test for heavy metal content to comply with TSCA
• Common pitfall: incorrect declaration as 'zirconium oxide' leading to reclassification
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.
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.
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.