Description

Bis(2-Methylphenyl)Phosphinic Acid CAS NO 18593-19-6 is a specialized organophosphorus compound featuring two ortho-tolyl groups bonded to a phosphinic acid center. This unique structure makes it a valuable intermediate and ligand in advanced chemical synthesis and materials science. It is primarily sought after by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for applications requiring precise molecular design and functionalization.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting neurological pathways.
• Catalyst & Ligand Precursor: Used to synthesize chiral or bulky phosphine ligands for transition metal catalysis in asymmetric synthesis and fine chemical production.
• Agrochemical Synthesis: Acts as an intermediate in the development of modern herbicides, fungicides, and plant growth regulators.
• Flame Retardant Synthon: Employed in the research and production of advanced, halogen-free flame retardants for engineering plastics and resins.
• Polymer Modification: Used to incorporate phosphinate groups into polymer backbones to enhance properties like thermal stability, adhesion, or flame resistance.
• Coordination Chemistry: Functions as a chelating agent for metal ions in the preparation of metal-organic frameworks (MOFs) or specialty complexes.
• Electronic Materials: Investigated as a precursor for materials used in organic light-emitting diodes (OLEDs) and other electronic applications.

Basic Information

Product Name	Bis(2-Methylphenyl)Phosphinic Acid
CAS No.	18593-19-6
Molecular Formula	C14H15O2P
Molecular Weight	246.24 g/mol
Synonyms	Di-o-tolylphosphinic Acid; Bis(o-Tolyl)phosphinic Acid; (2-Methylphenyl)phosphinic Acid Dimer; Phosphinic acid, P,P-bis(2-methylphenyl)-; o-Tolylphosphinic Acid; Di(2-methylphenyl)phosphine oxide (common misnomer); BIS(2-METHYLPHENYL)PHOSPHINIC ACID
EINECS	Contact for details

Quality Control

Our Bis(2-Methylphenyl)Phosphinic Acid is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and titration methods, to ensure high purity and consistency. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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 material is hygroscopic (moisture-sensitive); keep the container tightly sealed in a dry environment to prevent degradation.

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 (as Pb)	≤ 10 ppm

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