MEHQ Inhibited Acrylonitrile from Mexico
Acrylonitrile inhibited with 4-methoxyphenol (MEHQ) at 30-50 ppm for extended shelf life. Chapter 29 note (f) permits this stabilizer addition, maintaining HTS 2926.10.00.00 classification for transport to polymer plants.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Validate inhibitor levels via HPLC; temperature control <20°C storage; declare as UN1093 PG1 Flammable Liquid