Description

Tetraethylphosphonium Hydroxide is a quaternary phosphonium compound in the form of a strong organic base, typically supplied as a concentrated aqueous or methanolic solution. This compound is valued for its exceptional thermal stability and strong nucleophilic character, making it a superior alternative to traditional alkali metal hydroxides in demanding synthetic and catalytic processes. It is a critical reagent for researchers and manufacturers in the electronics, polymer, and fine chemical synthesis industries seeking high-performance, non-metallic bases.

Application

• Phase-Transfer Catalyst (PTC): Widely employed as an efficient and thermally stable catalyst in organic synthesis, particularly for alkylation, esterification, and polymerization reactions under biphasic conditions.
• Polymerization Initiator/Catalyst: Serves as a key component in the production of specialized polymers, including epoxy resins and polycarbonates, where it controls molecular weight and polymer architecture.
• Electrolyte Additive for Supercapacitors: Used in the formulation of advanced electrolytes to enhance the conductivity, voltage window, and cycling stability of electrochemical double-layer capacitors (EDLCs).
• Organic Synthesis Reagent: Acts as a powerful, non-nucleophilic base for deprotonation reactions, elimination reactions, and the generation of reactive intermediates in sensitive synthetic pathways.
• Surface Treatment & Etching: Applied in the electronics industry for the surface modification and anisotropic etching of semiconductors and other electronic materials.
• Ionic Liquid Precursor: Used as a starting material for synthesizing high-purity tetraalkylphosphonium-based ionic liquids, which are used as green solvents and functional fluids.

Basic Information

Product Name	Tetraethylphosphonium Hydroxide
CAS No.	14814-28-9
Molecular Formula	C8H21OP
Molecular Weight	164.23 g/mol
Synonyms	Tetraethylphosphonium hydroxide; Ethylphosphonium hydroxide, tetra-; TEP-OH; Tetraethylphosphonium hydroxide solution; Phosphonium, tetraethyl-, hydroxide; Hydroxytetraethylphosphonium; Tetraethylphosphonium hydrate
EINECS	Contact for details

Quality Control

Our Tetraethylphosphonium Hydroxide is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including assay by titration and impurity profiling, to ensure it meets precise specifications for concentration, ionic purity, and metal content. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your application requirements.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, well-ventilated area at room temperature (15-25°C). For solutions, ensure the container is kept tightly sealed to prevent solvent evaporation or absorption of atmospheric carbon dioxide, which can affect titer.

Specification

Item	Specification
Appearance	Colorless to pale yellow solution
Identification (IR)	Conforms
Assay (Titration)	20% w/w in H2O or MeOH (or as specified)
Purity (HPLC)	≥ 98.0% (on anhydrous basis)
Water Content (KF)	≤ 1.0% (for anhydrous material)
Chloride (Cl)	≤ 100 ppm
Heavy Metals (as Pb)	≤ 10 ppm

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