2923.90.01.00/Cetyltrimethylammonium Bromide (CTAB)/Japan

Cetyltrimethylammonium Bromide (CTAB) from Japan

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 — 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%

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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