4,4'-Diaminodiphenylmethane (DADPM) from China
DADPM, or methylene bis(o-chloroaniline) derivative, is an aromatic polyamine used in polyurethane curing agents. It qualifies under HTS 2921.51.30.00 per additional U.S. note 3 for listed diaminotoluene derivatives and salts.
Duty Rate — China → United States
44%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Submit structural formula and synthesis route to confirm note 3 listing
• Handle as potential carcinogen; ensure proper hazmat shipping declarations
• Test for isomer purity to prevent shift to general polyamine headings