Trioxane Pharmaceutical Intermediate from China
Trioxane is a heterocyclic compound with oxygen hetero-atoms forming a six-membered ring, used as an intermediate in pharmaceutical synthesis. It falls under HTS 2932.99.90 as a heterocyclic compound with oxygen hetero-atoms only, not elsewhere specified in heading 2932. This classification applies to pure chemical forms without additional functional groups that would shift it to other subheadings.
Duty Rate — China → United States
Rate breakdown
Import Tips
• Verify chemical purity and structure via Certificate of Analysis to confirm it meets Chapter 29 note (a) for separate chemically defined compounds
• Include Safety Data Sheets (SDS) showing no added solvents or stabilizers that could trigger reclassification under notes (e) or (f)
• Avoid common pitfall of classifying as polymers; trioxane is excluded from 2932 per chapter notes if considered cyclic polymer of aldehydes