2923 · Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined:
This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.
Subordinate codes (5)
| Code | Description |
|---|---|
| 2923.10.00.00 | Choline and its salts |
| 2923.20 | Lecithins and other phosphoaminolipids: |
| 2923.30.00.00 | Tetraethylammonium perfluorooctane sulfonate |
| 2923.40.00.00 | Didecylmethylammonium perfluorooctane sulfonate |
| 2923.90.01.00 | Other |
Frequently asked
- What does 2923 cover?
- Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
- Where does this data come from?
- Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.