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Methyltriphenylphosphonium Bromide from Canada

Methyltriphenylphosphonium bromide is a phosphonium salt used in Wittig reagent preparation for olefin synthesis. Classified under 2931.90.90.52 as an organo-inorganic compound per Chapter 29 note (C)(1) for organic salts.

Duty Rate — Canada → 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

Hygroscopic; specify anhydrous grade and include retest date on labeling

Phosphorus compounds monitored under Chemical Weapons Convention; declare quantities

Confirm quaternary phosphonium structure to avoid organic phosphorus misclassification

Methyltriphenylphosphonium Bromide from Canada — Import Duty Rate | HTS 2931.90.90.52