4,4'-Methylenedianiline (MDA) from Japan
4,4'-Methylenedianiline is a diphenylmethane-based aromatic polyamine used in polyurethane production and epoxy curing agents. Classified under HTS 2921.59.4000 due to its status as a derivative of aromatic polyamines specified in additional U.S. note 3 to section VI.
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
• Comply with TSCA regulations and provide safety data sheets due to MDA's carcinogenic classification
• Confirm quota eligibility under note 3; excess imports may face higher rates or denial
• Label shipments with exact chemical name and CAS (101-77-9) to prevent reclassification as a polymer precursor