Platinum Black Sponge Precursor from Mexico
Spongy platinum precursor for platinum black catalysts used in fuel cells and organic synthesis. HTS 7110.11.00.20 covers this unwrought sponge form of platinum, distinct from final powder catalysts. Complies with definitions excluding iridium-group metals unless alloyed per Note 2(b).
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Include sieve analysis proving <90% passes 0.5mm mesh to maintain sponge classification
• Label clearly as semi-manufactured precious metal to prevent confusion with finished articles in 7113
• For alloy sponge, provide weight composition analysis showing platinum predominance