Synthetic Iron Oxide Hydroxide for Catalyst Support
Synthetic goethite (alpha-FeOOH) iron oxide hydroxide with ≥70% Fe2O3 equivalent for catalyst carrier applications in chemical processing. HTS 2821.10.0040 covers this as 'other' synthetic iron oxides and hydroxides. High surface area from precipitation synthesis.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supported catalysts ready for use
Iron oxide impregnated with precious metals becomes a finished catalyst.
If as chemical preparations for catalysts
Mixtures containing iron oxide for catalyst manufacture classify as preparations.
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Import Tips & Compliance
• Document BET surface area (>100 m²/g) confirming catalyst grade specifications
• Include calcination temperature data showing hydroxide-to-oxide conversion potential
• Ensure stability testing for humid transport conditions
Related Products under HTS 2821.10.00.40
Synthetic Red Iron Oxide Pigment
Synthetic red iron oxide pigment (CI Pigment Red 101) is a high-purity, finely milled powder containing over 70% combined iron as Fe2O3, used primarily in paints and coatings. It falls under HTS 2821.10.0040 as a synthetic iron oxide pigment classified as 'other' within the synthetic pigments subheading. This classification applies to its chemically defined nature and pigment-grade particle size.
Synthetic Yellow Iron Oxide Pigment
Synthetic yellow iron oxide (CI Pigment Yellow 42) is a goethite-based pigment with ≥70% Fe2O3 equivalent, engineered for construction materials and plastics coloration. Classified under HTS 2821.10.0040 as 'other' synthetic iron oxide pigments due to its artificial synthesis and high purity. It meets chapter requirements for chemically defined inorganic metal oxides.
Synthetic Black Iron Oxide Pigment
Synthetic black iron oxide (CI Pigment Black 11, magnetite Fe3O4) contains over 70% combined iron as Fe2O3, used in asphalt roofing and magnetic applications. It is classified in HTS 2821.10.0040 as an 'other' synthetic pigment due to its precipitated manufacturing process. This ensures separation from natural magnetites.
Synthetic Brown Iron Oxide Pigment
Synthetic brown iron oxide pigment blends red and yellow oxides for burnt sienna effect, with ≥70% Fe2O3 content for artist paints and flooring. Falls under HTS 2821.10.0040 as 'other' synthetic iron oxide due to calcined production method. Chemically defined per Chapter 28 notes.
Micaceous Synthetic Iron Oxide Pigment
Micaceous synthetic iron oxide pigment features platelet-shaped particles for anti-corrosive primer coatings, containing >70% Fe2O3. Classified HTS 2821.10.0040 as 'other' synthetic pigment due to specialized morphology from synthetic process. Used in marine and structural steel protection.
Granular Synthetic Iron Oxide for Concrete
Granular synthetic iron oxide (>70% Fe2O3) designed for coloring concrete blocks and pavers, with larger particle size for dispersion. HTS 2821.10.0040 'other' synthetic pigment classification applies to its pure chemical form. Prevents bleeding in wet concrete mixes.