4,4'-Diaminodiphenylmethane from Germany
4,4'-Diaminodiphenylmethane, also known as DDM, is an aromatic polyamine used in epoxy resin curing and polyimide synthesis. It is covered by HTS 2921.59.4000 as a derivative specified in additional U.S. note 3 to section VI.
Duty Rate — Germany → United States
16.5%
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
Import Tips
• Require manufacturer's declaration confirming purity >98% to meet 'separate chemically defined compound' criteria
• Check for anti-dumping duties on certain Asian suppliers of this chemical
• Document end-use as industrial intermediate to avoid consumer product misclassification