Bismuth Nitrate Catalyst
Bismuth nitrate is used as a catalytic preparation in organic synthesis reactions like esterification and oxidation processes. It falls under HTS 3815.90.1000 as a reaction initiator consisting wholly of inorganic bismuth compounds, not elsewhere specified. This catalyst enables milder reaction conditions compared to traditional acids.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as pure chemical reagent without catalytic formulation
Pure inorganic salts like bismuth nitrate are classified under Chapter 28 as chemicals when not presented as finished catalytic preparations.
If contains organic stabilizers or solvents
Addition of organic components changes classification to prepared chemical mixtures in heading 3824.
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Import Tips & Compliance
• Provide chemical composition analysis certifying 100% inorganic bismuth content to qualify under this subheading
• Include Safety Data Sheets (SDS) and end-use statements proving catalytic application, not as reagents
• Verify no organic additives exceed trace levels to prevent reclassification under 3815.90.2000
Related Products under HTS 3815.90.10.00
Tungsten Carbide Catalyst Powder
Fine tungsten carbide powder serves as a heterogeneous catalyst in Fischer-Tropsch synthesis and hydrocracking processes. Classified under HTS 3815.90.1000 as it consists wholly of inorganic tungsten compounds designed for reaction acceleration. Its high surface area enhances catalytic efficiency in petrochemical applications.
Vanadium Pentoxide Catalyst
Vanadium pentoxide (V2O5) is the primary catalyst for sulfuric acid production via the contact process. It qualifies for HTS 3815.90.1000 as a wholly inorganic vanadium-based reaction accelerator. The catalyst operates at high temperatures to facilitate SO2 oxidation to SO3.
Bismuth Triflate Reaction Initiator
Bismuth(III) triflate acts as a water-tolerant Lewis acid catalyst for aldol reactions and glycosylations. This inorganic bismuth compound is classified under HTS 3815.90.1000 for its role as a reaction initiator. Its mild acidity makes it superior to traditional Lewis acids.
Tungsten Oxide Hydrodesulfurization Catalyst
WO3-based catalysts promoted with nickel or cobalt for hydrodesulfurization of petroleum fractions. Falls under HTS 3815.90.1000 when consisting wholly of inorganic tungsten compounds without organic binders. Essential for ultra-low sulfur diesel production.
Vanadium Phosphate Catalyst
Vanadium phosphorus oxide (VPO) catalyst used in n-butane selective oxidation to maleic anhydride. Classified under HTS 3815.90.1000 as inorganic vanadium compounds functioning as reaction accelerators. Provides high selectivity in gas-phase oxidation.
Bismuth Subnitrate Catalytic Promoter
Bismuth subnitrate used as promoter in automotive catalytic converters and NOx reduction systems. This basic bismuth nitrate qualifies under HTS 3815.90.1000 as wholly inorganic reaction accelerator. Enhances thermal stability of noble metal catalysts.