4,4'-Methylenedianiline (MDA) from Japan
4,4'-Methylenedianiline is a reactive aromatic diamine used in the production of high-performance polymers and as a curing agent. Classified under HTS 2921.59.80.90 as 'other' aromatic polyamines and derivatives. Its structure contains two aromatic amine groups connected by methylene bridge.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• MDA requires specific OSHA workplace exposure permits and handling certifications
• Declare exact purity (typically >97%) to maintain Chapter 29 compound classification
• Include CAS number (101-77-9) on all documentation for customs verification