Description

Diphenyl(o-Tolyl)Phosphine Oxide is a versatile organophosphorus compound that serves as a key intermediate and ligand in advanced chemical synthesis. Its value lies in its ability to facilitate complex reactions, particularly in the creation of pharmaceuticals and specialty materials. This product is essential for R&D chemists and manufacturers in the pharmaceutical, agrochemical, and material science industries seeking reliable, high-purity building blocks.

Application

• As a ligand or catalyst precursor in transition metal-catalyzed cross-coupling reactions (e.g., Suzuki, Heck reactions).
• An important intermediate in pharmaceutical synthesis, particularly for active pharmaceutical ingredients (APIs) and drug candidates.
• Used in the research and development of advanced materials, such as organic light-emitting diodes (OLEDs) and photoinitiators.
• Employed as a stabilizer or additive in specialty polymer and resin formulations.
• Acts as a key synthon in agrochemical research for developing novel crop protection agents.
• Utilized in academic and industrial R&D for exploring new organophosphorus chemistry and reaction methodologies.

Basic Information

Product Name	Diphenyl(o-Tolyl)Phosphine Oxide
CAS No.	6840-26-2
Molecular Formula	C19H17OP
Molecular Weight	292.31 g/mol
Synonyms	(2-Methylphenyl)diphenylphosphine oxide; o-Tolyldiphenylphosphine oxide; Diphenyl(2-methylphenyl)phosphine oxide; Phosphine oxide, diphenyl(2-methylphenyl)-; (o-Tolyl)diphenylphosphine oxide; 2-Methyldiphenylphosphine oxide; Diphenyl-o-tolylphosphine oxide
EINECS	Contact for details

Quality Control

Our Diphenyl(o-Tolyl)Phosphine Oxide is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and GC, to ensure high purity and consistency. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee it meets your specific research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed and consideration should be given to storage under an inert atmosphere for long-term preservation of quality.

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%
Residue on Ignition	≤ 0.1%

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