Description

Tetrabutylphosphonium Hydroxide is a quaternary phosphonium salt supplied as a concentrated solution, typically in water or methanol. This compound serves as a powerful, non-nucleophilic organic base and a versatile phase-transfer catalyst, offering distinct advantages over traditional ammonium-based catalysts in demanding chemical processes. It is a critical reagent for industries requiring high-performance catalysis and specialized synthesis, particularly in electronics manufacturing and advanced material science.

Application

• Phase-Transfer Catalyst (PTC): Widely employed in organic synthesis for alkylation, esterification, and polymerization reactions where traditional catalysts are ineffective.
• Electronic Chemicals: Essential in the production of photoresist developers and as a key component in the formulation of liquid crystal display (LCD) materials.
• Polymer Industry: Acts as a catalyst for the synthesis of polycarbonates, epoxies, and other high-performance polymers.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules, leveraging its strong basicity under mild conditions.
• Analytical Chemistry: Utilized as an ion-pairing agent in High-Performance Liquid Chromatography (HPLC) for the separation of acidic compounds.
• Gas Scrubbing: Applied as an absorbent for acidic gases like carbon dioxide and hydrogen sulfide in industrial gas treatment processes.

Basic Information

Product Name	Tetrabutylphosphonium Hydroxide
CAS No.	14518-69-5
Molecular Formula	C₁₆H₃₇OP
Molecular Weight	276.44 g/mol
Synonyms	Tetra-n-butylphosphonium hydroxide; Phosphonium, tetrabutyl-, hydroxide; TBPH; Tetrabutylphosphonium hydroxide solution; Hydroxytetrabutylphosphonium; TBuPOH; Tetrabutylphosphane hydroxide
EINECS	238-543-2

Quality Control

Our Tetrabutylphosphonium 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, purity, and ionic content. Certificates of Analysis (COA) detailing all test results are provided with every shipment to guarantee traceability and batch-to-batch consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive) and a strong base. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from acids and incompatible materials. For long-term storage of concentrated solutions, consider an inert atmosphere to minimize carbonate formation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	40% in H₂O (or as specified)
Chloride (Cl)	≤ 50 ppm
Sulfate (SO₄)	≤ 50 ppm
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 5 ppm
Carbonate (as CO₃)	≤ 1.0 %

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