Glufosinate Acid Technical Powder from China
Pure glufosinate acid (2-amino-4-[hydroxy(methyl)phosphonoyl]butanoic acid) in technical powder form serves as the base active ingredient for herbicide production. Classified under HTS 2931.49.0010 due to its specific organo-phosphorus structure as a non-halogenated derivative. Imported primarily by agrochemical manufacturers for salt formation and formulation.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include certificate of analysis verifying chemical structure and >98% purity to confirm HTS classification
• Declare as toxic substance (Class 6.1) with phosphonate safety data; avoid bulk packaging without stabilizers
• Monitor for moisture content as it affects stability; improper storage leads to degradation and quality issues