Description

Methylphenylphosphinic Acid is a versatile organophosphorus compound with a phenyl and methyl group bonded to a phosphorus center. This structure makes it a valuable intermediate and ligand in advanced chemical synthesis and catalysis. It is particularly sought after by researchers and manufacturers in the pharmaceutical and specialty chemical sectors. Its unique reactivity profile enables its use in creating complex molecules and functional materials.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), especially those containing phosphorus.
• Ligand for Catalysis: Used as a precursor or direct ligand in transition metal catalysis for cross-coupling and other organic transformations.
• Flame Retardant Synthon: Serves as an intermediate in the production of specialized organophosphorus flame retardants and plasticizers.
• Agrochemical Research: Employed in the development of novel herbicides, insecticides, and plant growth regulators.
• Material Science: Used in the synthesis of phosphorus-containing polymers, resins, and advanced functional materials.
• Chemical Research & Development: A valuable reagent for method development and exploring new reaction pathways in academic and industrial R&D labs.

Basic Information

Product Name	Methylphenylphosphinic Acid
CAS No.	4271-13-0
Molecular Formula	C7H9O2P
Molecular Weight	156.12 g/mol
Synonyms	Phenylmethylphosphinic Acid; Methyl(phenyl)phosphinic Acid; α-Hydroxybenzylmethylphosphine Oxide; (Hydroxyphenylmethyl)methylphosphine Oxide; Methylphenylphosphinous Acid; Benzylmethylphosphinic Acid; P-Methylphenylphosphinic Acid
EINECS	224-264-7

Quality Control

Our Methylphenylphosphinic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and titration methods, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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 conditions to prevent degradation. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 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.