Description

Tetramethylphosphonium Bromide is a versatile quaternary phosphonium salt with the CAS number 4519-28-2. This high-purity compound serves as a critical precursor and catalyst in advanced organic synthesis and materials science. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking reliable, high-performance chemical intermediates.

Application

• Phase-Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, enhancing yield and efficiency in alkylation and other organic transformations.
• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex organic molecules.
• Polymer Chemistry: Acts as a monomer or catalyst in the production of specialty polymers and advanced materials.
• Agrochemical Synthesis: Employed as a key building block in the manufacture of certain pesticides and herbicides.
• Ionic Liquid Precursor: Serves as a starting material for the synthesis of novel phosphonium-based ionic liquids.
• Laboratory Reagent: Used in research and development for studying reaction mechanisms and developing new synthetic methodologies.

Basic Information

Product Name	Tetramethylphosphonium Bromide
CAS No.	4519-28-2
Molecular Formula	C4H12BrP
Molecular Weight	171.02 g/mol
Synonyms	Phosphonium, tetramethyl-, bromide; Tetramethylphosphonium bromide; Tetramethylphosphonium bromide (1:1); Tetramethylphosphonium bromide salt; TMPB; Me4PBr; Tetramethylphosphonium monobromide
EINECS	Contact for details

Quality Control

Our Tetramethylphosphonium Bromide is manufactured under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability, consistency, 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 product is hygroscopic (moisture-sensitive) and must be kept under dry, inert conditions to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	~300 °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.