Description

Benzyltriphenylphosphonium Bromide is a versatile and highly reactive quaternary phosphonium salt widely used as a key reagent in organic synthesis. Its primary value lies in its role as a potent ylide precursor for the Wittig reaction, enabling the efficient synthesis of alkenes from carbonyl compounds. This makes it an indispensable material for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors seeking to construct complex molecular architectures.

Application

• Wittig Olefination: A fundamental reagent for the synthesis of alkenes, dienes, and other unsaturated compounds from aldehydes and ketones.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex drug candidates requiring specific alkene functionalities.
• Agrochemical Synthesis: Employed in the production of herbicides, pesticides, and plant growth regulators that contain olefinic bonds.
• Ligand & Catalyst Preparation: Serves as a precursor for phosphine ligands and catalysts used in cross-coupling and other transition metal-catalyzed reactions.
• Material Science Research: Applied in the development of organic light-emitting diodes (OLEDs), liquid crystals, and polymers with tailored properties.
• Academic & Industrial R&D: A staple reagent in chemical research laboratories for methodology development and exploratory synthesis.

Basic Information

Product Name	Benzyltriphenylphosphonium Bromide
CAS No.	20767-31-1
Molecular Formula	C25H22BrP
Molecular Weight	433.32 g/mol
Synonyms	Benzyltriphenylphosphonium bromide; Benzyl(triphenyl)phosphonium bromide; (Bromomethyl)triphenylphosphonium; TPPB; Phosphonium, benzyltriphenyl-, bromide; NSC 154105; Benzyl triphenyl phosphonium bromide; Triphenylbenzylphosphonium bromide
EINECS	244-052-7

Quality Control

Our Benzyltriphenylphosphonium Bromide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

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). This compound is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere for long-term storage to maintain optimal stability and reactivity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Approx. 280-285°C (dec.)
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm

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