Stabilized Didecylmethylammonium Perfluorooctane Sulfonate from Japan
This quaternary ammonium salt with added stabilizer for preservation during transport. Remains under HTS 2923.40.00.00 as per Chapter 29 note (f) allowing stabilizers necessary for preservation. Applied in electronics manufacturing for fluorinated surfactants.
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
• List stabilizer composition and justify as 'necessary for preservation' per note (f) to prevent reclassification
• Use proper UN packaging for corrosive chemicals; mismatches lead to CBP exam delays
• Monitor MFN duty rates; GSP ineligible due to chemical specificity—confirm country of origin