Description

Phenylphosphinic Acid CAS NO 1779-48-2 is a versatile organophosphorus compound characterized by its phosphinic acid functional group attached to a phenyl ring. This structure makes it a valuable intermediate and reagent in advanced chemical synthesis, particularly for introducing phosphorus-containing moieties. It is essential for manufacturers and R&D facilities in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop new active ingredients or functional materials. Its utility stems from its role as a building block for ligands, flame retardants, and pharmaceutical precursors.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, especially those targeting bone diseases or requiring phosphonate/phosphinate groups for bioactivity.
• Agrochemical Synthesis: Used in the production of herbicides, plant growth regulators, and other crop protection agents where the phenylphosphinate moiety enhances efficacy.
• Ligand and Catalyst Preparation: Serves as a precursor for creating specialized phosphine ligands used in homogeneous catalysis for fine chemical and pharmaceutical manufacturing.
• Flame Retardant Synthon: An intermediate in the production of reactive and additive flame retardants for engineering plastics and textiles.
• Polymer Modification: Employed to incorporate phosphorus into polymer backbones or as a cross-linking agent, improving flame resistance and thermal stability of materials.
• Research & Development: A crucial reagent in academic and industrial R&D for exploring new organophosphorus chemistry and material science applications.
• Metal Extraction and Chelation: Used in formulations for the selective extraction or sequestration of specific metal ions in hydrometallurgy or water treatment.

Basic Information

Product Name	Phenylphosphinic Acid
CAS No.	1779-48-2
Molecular Formula	C6H7O2P
Molecular Weight	142.09 g/mol
Synonyms	Benzenephosphinic Acid; Phenylphosphinous Acid; Monophenylphosphinic Acid; Phosphinic acid, Phenyl-; PPA; Phenphosphinic Acid; (Hydroxy)(phenyl)phosphine oxide; Phenyl-H-phosphinic acid
EINECS	217-214-0

Quality Control

Our Phenylphosphinic Acid is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high-purity standards required for synthetic applications. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with each shipment. We support compliance with global regulatory frameworks, including REACH, and can tailor specifications to meet specific customer or pharmacopeial requirements.

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). Keep away from strong bases, oxidizers, and incompatible materials. Due to its acidic nature, ensure containers are made of compatible materials and are clearly labeled.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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