Morpholine Industrial Grade from Mexico
Morpholine is a six-membered heterocyclic ring with one oxygen and one nitrogen hetero-atom, but classified here due to oxygen hetero-atom specification. Used in rubber curing and corrosion inhibitors. HTS 2932.99.90 as other oxygen-containing heterocycles.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Note potential nitrogen heading conflict; oxygen hetero-atom classification prevails per Chapter 29 structure
• Industrial grade requires distillation specs showing cyclic purity vs. piperazine impurities
• Avoid bulk tank classification as mixtures; drum packaging maintains pure compound status