4,4'-Methylenebis(2-chloroaniline) from Japan
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 — 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
• 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