Phase Transfer Catalysts & Quaternary Ammonium Salts

Phase transfer catalysis lets an aqueous anion react with an organic substrate by carrying it across the phase boundary. Quaternary ammonium salts are the classic carriers, and this sub-category supplies a broad set of them. Products include Aliquat 336, Benzyltributylammonium bromide and chloride, (1-Butyl)triethylammonium bromide, and benzalkonium chloride solutions at 50% and 80% for biocidal formulations.

Catalyst selection depends on lipophilicity and the anion being moved. Longer alkyl chains favour transfer into non-polar solvents, while benzyl salts are cheaper and easier to remove. Counter-ion matters as well, since iodide or bromide can compete with the reacting anion. Small screening packs allow comparison before committing to process scale.

• Alkylation, cyanation and ether synthesis under biphasic conditions
• Oxidations with aqueous hypochlorite or permanganate
• Surfactant and antimicrobial formulations

Solids are packed in sealed bottles or fibre drums, and concentrated solutions in HDPE containers. Each lot comes with a COA and SDS covering assay and appearance.