4,4'-Methylenebis(2-chloroaniline) from Canada
Known as MOCA, this di-chloro substituted aromatic polyamine is listed in HTS 2921.59.0800, used as a curing agent in polyurethane production. Features methylene bridge between two chloroaniline units. Strictly controlled due to carcinogenicity but classified as aromatic polyamine.
Duty Rate — Canada → United States
15.8%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• EPA significant new use rule applies; file SNUN for polyurethane uses beyond grandfathered applications
• Highly toxic carcinogen; requires special handling permits and worker protection plans
• Verify no MOCA content in imported polyurethanes (limit 0.1%) per TSCA Section 5