Dipropylamino-butylidene phosphonamidic fluoride methyl salt from Mexico
Alkylated salt of N-(dipropylamino)C4-alkylidene phosphonamidic fluoride, with all groups ≤C10, matching HTS 2929.90.50.30 including salts. Used in fine chemical production for herbicides. Chapter notes prioritize nitrogen function classification.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document alkylation specifics to distinguish from protonated salts; comply with EPA FIFRA if agrochemical intermediate; test for impurities that could shift classification