Tetramethylammonium Hydroxide (TMAH) 25% Solution from Germany
Tetramethylammonium hydroxide is a quaternary ammonium hydroxide used as a developer in semiconductor manufacturing and as a strong organic base. The 25% aqueous solution is classified under HTS 2923.90.0100 per Chapter 29 notes covering quaternary ammonium hydroxides and water-dissolved forms. It remains a separate chemically defined compound.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Classify based on principal function; provide end-use statements if for electronics to avoid industrial chemical mix-ups
• Corrosive nature requires proper UN numbering and packaging declarations under DOT regulations