Bismuth Subnitrate Catalytic Promoter from Germany
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.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Thermal analysis (TGA/DSC) verifying decomposition profile typical of catalytic-grade material
• End-use statement specifying emission control application prevents reagent classification
• Particle size distribution critical for promoter dispersion in final catalyst formulation