Fumaronitrile from Canada
Fumaronitrile (NCCH=CHCN) is a trans-1,2-dicyanoethylene used in Diels-Alder reactions and polymer modification. Classified HTS 2926.90.50 as other unsaturated nitrile-function compound; dual nitrile groups don't trigger separate subheading.
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
• Highly toxic—requires SCBA for spills; Store under inert atmosphere; Provide acute toxicity LD50 data for SDS