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%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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