Chromium Ammonium Sulfate from Mexico
Chromium ammonium sulfate serves as a precursor in catalyst production and analytical standards. It is classified under tariff item 2833.29.00 as a chromium sulfate, though ammonium complexes border on heading 28.42. It is a green crystalline material.
Duty Rate — Mexico → Canada
0%
Import Tips
• Determine if the product is a double salt of chromium and ammonium; if so, heading 28.42 may apply
• Provide the exact stoichiometry to the CBSA
• If used as an analytical standard, ensure purity documentation is available