U.S. import tariffs · heading 2923

Heading 2923: Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether…

Every line of heading 2923 in the U.S. Harmonized Tariff Schedule, with its general (column 1) duty rate. Open a code for the landed cost calculator, trade agreement rates and email alerts if the rate changes.

Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined

Chapter 29: Organic chemicals. Schedule checked on November 8, 2026.

Not always the total: additional chapter 99 duties (such as Section 232 or Section 301), antidumping or countervailing duties may apply depending on the country of origin. See recent chapter 99 changes →

Tariff lines

HTS codeOfficial descriptionGeneral rate
2923.10.00.00Choline and its salts3.7%
2923.20Lecithins and other phosphoaminolipids:
2923.20.10.00Purified egg phospholipids, pharmaceutical grade meeting requirements of the U.S. Food and Drug Administration, for use in intravenous fat emulsionFree
2923.20.20Other5%
2923.20.20.10Certified organic lecithins
2923.20.20.50Other
2923.30.00.00Tetraethylammonium perfluorooctane sulfonate6.2%
2923.40.00.00Didecylmethylammonium perfluorooctane sulfonate6.2%
2923.90.01.00Other6.2%

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Exports are reported with Schedule B numbers. Heading 2923 has 6 of them. Schedule B lookup →

  • 2923.10.0000CHOLINE AND ITS SALTS
  • 2923.20.1000PURIFIED EGG PHOSOPHOLIPIDS, PHARMACEUTICAL GRADE MEETING REQUIREMENTS OF THE USFDA, FOR USE IN INTRAVENOUS FAT EMULSION
  • 2923.20.2000LECITHINS AND OTHER PHOSPHOAMINOLIPIDS, NESOI
  • 2923.30.0000TETRAETHYLAMMONIUM PERFLUOROOCTANE SULFONATE
  • 2923.40.0000DIDECYLDIMETHYLAMMONIUM PERFLUOROOCTANE SULFONATE
  • 2923.90.0100QUATERNARY AMMONIUM SALTS AND HYDROXIDES, WHETHER OR NOT CHEMICALLY DEFINED, NESOI

Source: U.S. International Trade Commission, Harmonized Tariff Schedule; Schedule B: U.S. Census Bureau. Information only, not legal or customs advice; U.S. Customs and Border Protection decides the classification and the duty. Confirm with a licensed customs broker before you ship.

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