4,4'-Methylenedianiline (MDA) from China
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 — China → United States
41.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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