Quaternary Ammonium & Phosphonium Compounds
Benzyltrimethylammonium Chloride
White to off-white solid. A quaternary ammonium salt widely used as a curing accelerator for polymer systems such as powder coatings and epoxy resins, as a modifier for organobentonite and montmorillonite, and as an efficient phase-transfer catalyst in organic synthesis.
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Tetraethylammonium Bromide
White to off-white solid. Used as a molecular-sieve template agent and a curing accelerator for polymer systems such as powder coatings and epoxy resins, as well as an efficient phase-transfer catalyst in organic synthesis.
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Tetrabutylammonium Hydrogen Sulfate
White to off-white solid, soluble in water, alcohols, ether and chloroform. An efficient phase-transfer catalyst in organic synthesis and an analytical reagent for high-performance liquid chromatography.
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Tetraethylammonium Hydroxide
Core advantages: 1. Free of metal impurities such as Na⁺, K⁺, Ca²⁺—no metal contamination for semiconductors, molecular sieves, or pharmaceutical synthesis; 2. Both lipophilic and hydrophilic—an efficient phase-transfer catalyst; 3. Mild and controllable alkalinity, with strong selectivity for silicon substrate corrosion without over-etching the wafer; 4. Volatile decomposition products, leaving no inorganic salt residue.
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Tetrapropylammonium Hydroxide
Colorless transparent liquid. 1. Molecular sieve templating agent.
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1-Adamantyltrimethylammonium Chloride
White crystalline solid, hygroscopic. Acts as a surfactant with excellent detergency and bactericidal performance, and can also be used as a molecular-sieve template agent.
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Tetrabutylammonium Bromide
White to off-white solid. A widely used quaternary ammonium phase-transfer catalyst, also serving as a curing accelerator for polymer systems such as powder coatings and epoxy resins and as a phase-change cool-storage material in refrigeration systems.
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Dimethyldiethylammonium Hydroxide
Colorless to light-yellow transparent liquid (25% aqueous solution). A strongly alkaline quaternary ammonium hydroxide that readily absorbs carbon dioxide; used as a molecular-sieve template agent and as a polymerization catalyst for silicone and polycarbonate synthesis.
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Benzyltrimethylammonium Hydroxide
Supplied as a 25% colorless transparent aqueous solution. It readily absorbs carbon dioxide and is strongly alkaline and corrosive, serving as an efficient phase-transfer catalyst and polymerization catalyst in organic synthesis.
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Tetraphenylphosphonium Bromide
White to off-white solid. A quaternary phosphonium phase-transfer catalyst suitable for synthesizing meta-aromatic fluorides, and a phosphorus ylide precursor for Wittig reactions in fine chemicals, pharmaceuticals and liquid-crystal monomer synthesis.
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Methyltriphenylphosphonium Bromide
White to off-white solid. An important quaternary phosphonium phase-transfer catalyst and a phosphorus ylide precursor for carbon-carbon double-bond formation via Wittig reactions in fine chemicals, pharmaceuticals and liquid-crystal monomer synthesis.
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