Methyldiethanolamine (MDEA) from Canada
MDEA is an alkanolamine (CH3N(CH2CH2OH)2) used primarily in natural gas sweetening, fitting HTS 2922.19.96.90 as an oxygen-function amino-compound with ether-like properties but classified as amino-alcohol. Chemically defined per Chapter notes.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide GC-MS analysis confirming identity and purity levels
• Declare as pure chemical, not formulated scrubber solution
• Comply with pipeline industry specifications if for energy sector end-use