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Didecyldimethylammonium Chloride (DDAC) from Japan

Didecyldimethylammonium chloride is a quaternary ammonium compound serving as a broad-spectrum disinfectant and wood preservative. As a pure, chemically defined salt, it is classified in HTS 2923.90.0100 under the quaternary ammonium salts heading. Chapter notes confirm inclusion for separate organic compounds.

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

EPA registration required if for pesticide use; include product label and efficacy data

Purity >95% keeps it in Ch. 29; lower grades risk Chapter 38 reclassification

Declare as non-hazardous if stabilized properly to minimize shipping costs