Morpholine Technical Grade from Mexico
Morpholine features a six-membered heterocyclic ring containing two oxygen and two nitrogen hetero-atoms, used in rubber vulcanization and pharmaceutical synthesis. Despite nitrogen presence, classified by last numerical heading rule at 2932.99.90.90 when oxygen hetero-atom structure predominates. Meets Chapter 29 definition for heterocyclic compounds.
Duty Rate — Mexico → United States
3.7%
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
• Submit structural analysis confirming oxygen hetero-atom priority over nitrogen functions
• Provide end-use statement distinguishing from pesticide uses (2932.99 statistical suffixes)
• Avoid bulk packaging >200L drums which may trigger 3824 mixture classification