Flue Gas Desulfurization Gypsum from Canada
Synthetic gypsum from power plant emissions scrubbing, chemically identical to natural gypsum. HTS 2520.10.00.00 covers this high-purity dihydrate form for wallboard and agriculture. Increasingly replaces mined gypsum.
Duty Rate — Canada → United States
10%
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
• Stack gas process certificates confirming gypsum purity >93%
• Radioactivity testing standard for FGD materials from coal plants
• Environmental compliance docs for byproduct status