Sodium Cyanide Silver Soldering Flux from Canada
Anhydrous sodium cyanide-based flux for silver soldering jewelry and electronics. Inorganic salts dissolve oxides at soldering temperatures, fitting 3810.90.2000 for wholly inorganic auxiliary preparations. Highly toxic, used in precision assembly.
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
• EPA TSCA pre-notification mandatory for cyanide compounds; expect delays
• Ship as hazardous material (UN 1689) with antidote kits documented