N-Methyldiethanolamine (MDEA) from Japan
MDEA is a tertiary amino-alcohol used primarily in natural gas sweetening to remove H2S and CO2, classified in HTS 2922.19.96 as other amino-alcohols. Its chemically defined structure fits Chapter 29's scope for oxygen-function compounds.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include gas absorption specifications but classify based on chemical structure, not end use
• Certify amine content and water dilution meets transport-only criteria per chapter notes
• Monitor Section 301 tariffs if sourced from China; consider diversification