Trimethyl Phosphite Stabilized with MEHQ from Germany
P(OCH3)3 with phosphorus bearing three methyl groups via oxygen links, but classified by the single methyl characteristic in HTS 2931.49.0055 per chapter notes allowing stabilizers. The MEHQ inhibitor doesn't affect principal classification. Polymerization inhibitor.
Duty Rate — Germany → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Declare stabilizer percentage (<0.1% MEHQ); note 2(g) allows without reclassification
• Air-reactive; requires inert atmosphere packaging and UN2789 shipping papers
• Distinguish from pesticide phosphites (3808) via purity certificate >99%