2923.90.01.00/Cetyltrimethylammonium Bromide (CTAB)/China

Cetyltrimethylammonium Bromide (CTAB) from China

Cetyltrimethylammonium bromide is a quaternary ammonium salt used as a cationic surfactant in DNA extraction and as an antimicrobial agent. It falls under HTS 2923.90.0100 as a quaternary ammonium salt, chemically defined with a positively charged nitrogen atom bonded to four alkyl groups. This classification applies to separate chemically defined organic compounds per Chapter 29 notes.

Duty Rate — China → United States

31.2%

Rate breakdown

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Calculate with your customs valueVerify classification with AI

Import Tips

• Provide detailed chemical composition certificates to verify it's a pure quaternary ammonium salt, avoiding reclassification as a mixture

• Ensure SDS (Safety Data Sheets) comply with HAZMAT regulations for surfactants, as they may require special handling declarations

• Avoid common pitfalls like insufficient purity documentation, which can lead to duties under mixture headings in Chapter 38