Description

Tetraethylphosphonium Bromide is a high-purity, versatile quaternary phosphonium salt with significant utility in advanced chemical synthesis. Its primary value lies in its role as a highly effective phase-transfer catalyst and a key precursor for synthesizing specialty ionic liquids and other functional materials. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and materials science sectors seeking to optimize reaction efficiency and develop novel products.

Application

• Phase-Transfer Catalyst (PTC): Widely employed to facilitate reactions between reagents in immiscible phases, significantly improving yields and rates in alkylation, displacement, and polymerization processes.
• Ionic Liquid Synthesis: Serves as a crucial precursor for the preparation of tetraalkylphosphonium-based ionic liquids, which are used as green solvents, electrolytes, and functional fluids.
• Pharmaceutical Intermediates: Utilized in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs) where its catalytic properties are advantageous.
• Polymer & Resin Modification: Acts as a catalyst or additive in the production of specialty polymers, epoxy resins, and other advanced materials to enhance properties.
• Agrochemical Formulations: Used in the synthesis of certain pesticides and herbicides, leveraging its efficacy in facilitating key synthetic steps.
• Organic Synthesis Reagent: A valuable reagent for various organic transformations, including the generation of ylides for Wittig-type olefination reactions.
• Electrolyte Additive: Investigated for use as an additive in battery electrolytes to improve stability and performance.
• Research & Development: A key compound for academic and industrial R&D in catalysis, electrochemistry, and materials science.

Basic Information

Product Name	Tetraethylphosphonium Bromide
CAS No.	4317-07-1
Molecular Formula	C8H20BrP
Molecular Weight	227.12 g/mol
Synonyms	Tetraethylphosphonium bromide; Ethyltriphenylphosphonium bromide (common misnomer, correct is tetraethyl); Phosphonium, tetraethyl-, bromide; TEPB; Tetraethylphosphonium bromide salt; (Triethyl)ethylphosphonium bromide; Tetraethylphosphonium bromide, 98+%; Tetraethylphosphonium bromide, 95%
EINECS	224-337-1

Quality Control

Our Tetraethylphosphonium Bromide is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for catalytic and synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Solubility	Soluble in water, methanol, acetonitrile

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.