Potassium Metal Chunks from Mexico
High-purity potassium metal supplied in small chunks under inert atmosphere, used in organic synthesis and as a reducing agent. Falls under HTS 2805.19.90 as an alkali metal, not in solution or interalloyed. Excludes rare-earth metals or mercury per Chapter 28 notes.
Duty Rate — Mexico → United States
5.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Ship under argon or mineral oil to prevent oxidation; include Material Safety Data Sheets (MSDS)
• Declare exact purity to avoid reclassification as alloys under Section XV
• Comply with DOT regulations for reactive solids (Division 4.3)