Ammonium Perrhenate Catalyst Precursor Flakes from Mexico
Ammonium perrhenate in flake form (NH4ReO4) is a key precursor for producing rhenium catalysts and superalloys. As a salt of perrhenic acid, it is classified under tariff item 2841.90.00 for other salts of oxometallic or peroxometallic acids.
Duty Rate — Mexico → Canada
0%
Import Tips
• Provide the exact rhenium content and purity on the commercial invoice
• If the product is for catalyst manufacturing, confirm it is not a prepared catalyst of heading 3815
• Keep the SDS and certificate of analysis for CBSA inspection