Description

Ethyltriphenylphosphonium Bromide is a versatile and highly reactive organophosphorus salt widely used as a key reagent in organic synthesis. Its primary value lies in its effectiveness as a ylide precursor for the Wittig reaction, a cornerstone method for the formation of carbon-carbon double bonds. This makes it an essential material for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors. The compound is valued for its ability to facilitate the synthesis of alkenes, olefins, and other complex organic molecules with precise stereochemical control.

Application

• Wittig Olefination Reagent: A fundamental reagent for converting carbonyl compounds (aldehydes and ketones) into alkenes, crucial for synthesizing vitamins, pharmaceuticals, and fragrances.
• Phase-Transfer Catalyst (PTC): Used to facilitate reactions between reagents in immiscible phases, improving yield and efficiency in various alkylation and condensation reactions.
• Pharmaceutical Intermediate Synthesis: Employed in the production of active pharmaceutical ingredients (APIs) and complex drug candidates requiring specific alkene functionalities.
• Agrochemical Manufacturing: Used in the synthesis of certain pesticides, herbicides, and plant growth regulators that contain olefinic structures.
• Polymer & Material Science: Serves as a monomer or modifying agent in the development of specialty polymers, liquid crystals, and functional materials.
• Organic Synthesis Research: A staple in academic and industrial R&D laboratories for constructing complex molecular architectures and exploring new synthetic methodologies.

Basic Information

Product Name	Ethyltriphenylphosphonium Bromide
CAS No.	1530-32-1
Molecular Formula	C20H20BrP
Molecular Weight	371.25 g/mol
Synonyms	Ethyltriphenylphosphonium bromide; ETPPB; (Ethyl)triphenylphosphonium bromide; Triphenyl(ethyl)phosphonium bromide; Phosphonium, ethyltriphenyl-, bromide; NSC 154105; BR 460; Ethyl triphenyl phosphonium bromide
EINECS	216-242-5

Quality Control

Our Ethyltriphenylphosphonium Bromide is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay (by titration or HPLC), identification (IR), and tests for specific impurities. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We support compliance with global regulatory frameworks, and our quality systems are designed to meet the stringent requirements of cGMP for pharmaceutical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Melting Point	203 - 208 °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.