Methyltriphenylphosphonium Bromide from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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