CAS Registry Number

CAS 3115-68-2 — Tetrabutylphosphonium bromide

Tetrabutylphosphonium bromide is a quaternary phosphonium salt widely used as a phase-transfer catalyst in organic synthesis, polymer chemistry, and electrochemistry. It facilitates reactions between hydrophobic and hydrophilic compounds, improving efficiency and yield in processes like alkylation, polymerization, and battery research. CAS 3115-68-2, molecular formula (C4H9)4PBr, molecular weight 294.88 g/mol. Store at ambient conditions. Hazard classification: Danger (corrosive, toxic if swallowed/inhaled). Molekula supplies tetrabutylphosphonium bromide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.