Trioxane from Japan
1,3,5-Trioxane is a cyclic trimer of formaldehyde used as fuel tablet component and chemical intermediate, qualifying as cyclic polymer of aldehyde per heading 2912 scope. Classified HTS 2912.49.90.00 as other aldehyde-oxygen compound. Chemically defined heterocyclic structure.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Melting point (62°C) and cyclic structure confirmation via DSC/NMR
• UN 1166 classification for flammable solid transport
• Purity certificate excluding polymer impurities >2%