Ammonium Persulfate Copper Pickling Powder from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Strong oxidizer (UN 1444); temperature-controlled shipping
• Decomposition risk—declare stabilizer-free status
• Distinguish from bleach compounds in 2828