Description

Tetraphenylphosphonium is an organophosphorus compound widely used as a versatile phase-transfer catalyst and a key reagent in organic synthesis. Its primary value lies in its ability to facilitate reactions between reagents in immiscible phases, significantly improving yields and reaction rates in various chemical processes. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates and catalysts.

Application

• As a phase-transfer catalyst (PTC) in nucleophilic substitution, oxidation, and polymerization reactions.
• As a key reagent for the synthesis of phosphonium salts and ylides used in Wittig olefination reactions.
• In the preparation of ionic liquids and electrolytes for advanced battery and electrochemical applications.
• As a precursor for the synthesis of other organophosphorus compounds and ligands for metal complexes.
• In polymer chemistry as an initiator or catalyst component for specific polymerization mechanisms.
• For analytical chemistry applications, including use as a standard or reagent in various test methods.
• In material science research for the surface modification of nanoparticles and the creation of functional materials.

Basic Information

Product Name	Tetraphenylphosphonium
CAS No.	18198-39-5
Molecular Formula	C24H20P
Molecular Weight	339.39 g/mol
Synonyms	Tetraphenylphosphonium cation; Tetraphenylphosphonium ion; Phosphonium, tetraphenyl-; TPP; TPP+; Tetraphenylphosphane; Tetraphenylphosphonium bromide (common salt form); Tetraphenylphosphonium chloride (common salt form)
EINECS	242-074-5

Quality Control

Our Tetraphenylphosphonium is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC and NMR, to ensure high chemical purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

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 and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	258 - 262 °C
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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