Description

Phenylphosphoric Acid is a versatile organophosphorus compound with the CAS number 701-64-4, serving as a key intermediate in advanced chemical synthesis. Its unique structure, featuring both a phenyl group and a phosphoric acid moiety, makes it valuable for introducing phosphorus-containing functionalities into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries who require high-purity building blocks for complex synthesis.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring phosphonate or phosphate ester groups for enhanced bioactivity or prodrug strategies.
• Agrochemical Synthesis: Acts as a precursor for herbicides, fungicides, and plant growth regulators where the phenylphosphonate structure is integral to the mode of action.
• Ligand and Catalyst Preparation: Employed in the development of organometallic catalysts and metal-chelating ligands for asymmetric synthesis and industrial catalysis.
• Flame Retardant Precursor: Serves as a starting material for the production of phosphorus-based flame retardants used in polymers and textiles.
• Specialty Polymer Monomer: Utilized in the creation of functional polymers, including ion-exchange resins and polymers with specific adhesion or surface-modification properties.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new reactions in organophosphorus chemistry and material science.

Basic Information

Product Name	Phenylphosphoric Acid
CAS No.	701-64-4
Molecular Formula	C6H7O4P
Molecular Weight	174.09 g/mol
Synonyms	Phenylphosphonic Acid; Benzenephosphonic Acid; Phenylphosphonic acid (mono-form); Phosphonic acid, Phenyl-; Monophenyl phosphonate; Kyselina fenylfosfonova; NSC 403686; PPA
EINECS	211-868-5

Quality Control

Our Phenylphosphoric Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay by titration, identification by FT-IR, and impurity profiling, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing purity, physical properties, and test results are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which may affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Melting Point	158 - 162 °C
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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