Chromium Ammonium Sulfate from Canada
Chromium ammonium sulfate serves as a precursor in catalyst production and analytical standards. Classified in HTS 2833.29.40.00 as chromium sulfate, though ammonium complexes border 2842. It's a green crystalline material meeting Chapter 28 purity standards.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide ammonium content analysis (<10%) to maintain 2833 classification vs 2842
• Lab-grade imports need NIST traceability certificates