Didecyldimethylammonium Chloride (DDAC)
DDAC is a twin-chain quaternary ammonium compound classified as a modified aromatic cationic surfactant, essential in industrial biocides and wood preservatives. It complies with the organic surface-active agent definition through its emulsifying and tension-reducing properties. Falls under 3402.41.10.00 for its cationic-aromatic characteristics.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for use as fungicides or wood preservatives
Specific biocide end-uses with pesticidal claims move to Chapter 38.
If sold as retail disinfectant concentrate
Retail cleaning preparations containing these agents fall under 'other' surface-active preparations.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Submit EPA registration documents if used as biocide to distinguish from pesticide classifications
• Ensure invoice specifies 'bulk surfactant, not preparation' to maintain 3402.41 status
Related Products under HTS 3402.41.10.00
Cetyltrimethylammonium Bromide (CTAB)
CTAB is a quaternary ammonium cationic surfactant with an aromatic-modified structure, widely used in laboratory applications for DNA extraction and as an antimicrobial agent. It qualifies under heading 3402 as it produces stable emulsions and lowers surface tension per the chapter note test. The aromatic modification places it specifically in 3402.41.10.00.
Methylbenzethonium Chloride
A synthetic aromatic cationic surfactant applied in topical antiseptics and preservative solutions. Complies with 3402 surface tension and emulsion standards, placed in 3402.41.10.00.
Domiphen Bromide
Domiphen bromide, an aromatic quaternary cationic surfactant, functions in oral care and antimicrobial mouthwashes. Meets Chapter 34 agent definitions for 3402.41.10.00.
Cocobenzyldimethylammonium Chloride
Blends coconut-derived chains with benzyl aromatic group, cationic surfactant for industrial cleaning. 3402.41.10.00 due to modified aromatic cationicity.
Stearyl Dimethyl Benzyl Ammonium Chloride
Long-chain aromatic cationic surfactant for antistatic and emulsifying in textiles. Fits 3402.41.10.00 criteria perfectly.
Myristyl Dimethyl Benzyl Ammonium Chloride
C14-chain modified aromatic cationic for preservative and biocide uses. 3402.41.10.00.