Morpholine Industrial Grade from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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