Description

Tris(4-Methylphenyl)Phosphine Oxide is a versatile organophosphorus compound characterized by its phosphine oxide core flanked by three tolyl groups. This structure makes it a valuable intermediate and ligand in advanced chemical synthesis, offering stability and specific electronic properties. It is primarily sought after by research institutions and industrial manufacturers involved in the development of pharmaceuticals, agrochemicals, and specialty materials.

Application

• As a key ligand or catalyst precursor in transition metal-catalyzed cross-coupling reactions (e.g., Suzuki, Heck).
• As a building block or intermediate in the synthesis of advanced pharmaceutical compounds and active ingredients.
• In the research and development of organic light-emitting diodes (OLEDs) and other electronic materials.
• As a stabilizer or modifying agent in polymer and resin formulations.
• For use in agrochemical research for creating novel pesticides or herbicides.
• As a flame retardant synergist in material science applications.
• In academic and industrial R&D for exploring new organophosphorus chemistry.

Basic Information

Product Name	Tris(4-Methylphenyl)Phosphine Oxide
CAS No.	797-70-6
Molecular Formula	C21H21OP
Molecular Weight	320.36 g/mol
Synonyms	Tris(p-tolyl)phosphine oxide; Tri-p-tolylphosphine oxide; Phosphine oxide, tris(4-methylphenyl)-; Tris(4-methylphenyl)phosphine oxide; TOOPO; (4-Methylphenyl)diphenylphosphine oxide (isomer); Tris(p-methylphenyl)phosphine oxide
EINECS	Contact for details

Quality Control

Our Tris(4-Methylphenyl)Phosphine Oxide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee compliance with your research or production specifications.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	< 10 ppm

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