Stabilized Diethyl Phosphite with MEHQ Inhibitor from China
Diethyl phosphite stabilized with 100ppm monomethyl ether hydroquinone (MEHQ) prevents auto-oxidation during storage. Classified under HTS 2920.22.00.00 per Chapter 29 note 2(f) as phosphite ester with necessary preservative.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Document stabilizer concentration (<0.1%) in SDS to qualify under note 2(f); higher levels risk 3824 classification
• Avoid plastic IBCs; use stainless steel or HDPE with fluorination for phosphite compatibility
• Monitor shelf life declaration; expired stabilizer versions often denied entry