Description

Tetramethylenebis(Triphenylphosphonium Bromide) is a versatile bisphosphonium salt widely used as a key reagent in organic synthesis. Its primary value lies in its role as a robust Wittig-Horner reagent, enabling the efficient synthesis of complex alkenes and conjugated systems. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors who require high-purity intermediates for specialized chemical transformations.

Application

• As a Wittig-Horner reagent for the stereoselective synthesis of alkenes and dienes.
• Key intermediate in the production of pharmaceutical active ingredients and complex organic molecules.
• Precursor for the synthesis of liquid crystals and other advanced functional materials.
• Used in polymer chemistry as a catalyst or chain-transfer agent.
• Reagent for phase-transfer catalysis in biphasic reaction systems.
• Building block for ligand synthesis in coordination chemistry and catalysis.
• Research and development of novel organic electronic materials.

Basic Information

Item	Details
Product Name	Tetramethylenebis(Triphenylphosphonium Bromide)
CAS No.	15546-42-6
Molecular Formula	C40H38Br2P2
Molecular Weight	724.48 g/mol
Synonyms	1,4-Bis(triphenylphosphonio)butane dibromide; Tetramethylenebis(triphenylphosphonium) dibromide; Butane-1,4-diylbis(triphenylphosphonium) bromide; 1,4-Bis(triphenylphosphonium)butane bromide; TPPB; Bis(triphenylphosphonium)butane dibromide; Tetramethylene bis(triphenylphosphonium bromide); (Ph3P+(CH2)4P+Ph3) 2Br-
EINECS	Contact for details

Quality Control

Our Tetramethylenebis(Triphenylphosphonium Bromide) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and specification compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere or in a desiccator to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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