Butyl Methylphosphinate with Stabilizer from Mexico
Stabilized butyl methylphosphinate containing anticaking agent for safe transport, permitted under chapter note 2(f) and classified under HTS 2931.49.0015. Used in manufacturing phosphorus-containing ligands for catalysis.
Duty Rate — Mexico → 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
• Document stabilizer as necessary for preservation per chapter note 2(f); avoid dyes that trigger note 2(g) exceptions
• Confirm phosphinate structure via NMR spectra in technical file