Ammonium Persulfate Copper Pickling Powder from Canada
Crystalline ammonium persulfate used to pickle copper strip before plating. Inorganic oxidizer removes tarnish without acid attack, fitting 3810.90.2000 for metal surface preparations. Electronics circuit board production.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Strong oxidizer (UN 1444); temperature-controlled shipping
• Decomposition risk—declare stabilizer-free status
• Distinguish from bleach compounds in 2828