2930.90.92.25/Ethyl Methylphosphonic Acid (EMPA)/Canada

Ethyl Methylphosphonic Acid (EMPA) from Canada

Ethyl methylphosphonic acid (CH3P(O)(OH)(OC2H5)) is a hydrolysis product of nerve agents, featuring phosphorus bonded to one methyl group and one ethyl group with no additional carbon atoms. Classified under HTS 2930.90.9225 due to its specific phosphorus substitution pattern matching the heading description. Used in chemical analysis and degradation studies.

Duty Rate — Canada → 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
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Import Tips

• Submit NMR spectra confirming P-CH3 and P-OC2H5 bonds; critical for avoiding misclassification as general phosphonic acids

• Comply with Chemical Weapons Convention import notifications; subject to enhanced scrutiny and end-use certificates

• Label as research chemical only; commercial formulations may shift to pesticide classifications

Ethyl Methylphosphonic Acid (EMPA) from Canada — Import Duty Rate | HTS 2930.90.92.25