Description

(4-Aminophenyl)Phosphonic Acid is a versatile bifunctional organophosphorus compound containing both an aromatic amine and a phosphonic acid group. This unique structure makes it a valuable intermediate for synthesizing metal-chelating agents, corrosion inhibitors, and functional materials. It is primarily sought by manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for creating advanced ligands and surface-modifying agents.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel drug candidates, particularly those requiring metal coordination or bone-targeting properties.
• Corrosion Inhibitor Precursor: Serves as a key building block for creating high-performance corrosion inhibitors for metals in industrial water systems and coatings.
• Chelating Agent Synthesis: Acts as a precursor for manufacturing specialized ligands used in water treatment, catalysis, and metal ion sequestration.
• Surface Modification Agent: Employed to functionalize surfaces of materials like ceramics, metals, or polymers to improve adhesion, biocompatibility, or hydrophilicity.
• Flame Retardant Synergist: Used in the development of flame-retardant formulations for plastics and textiles.
• Agrochemical Intermediate: Utilized in the production of certain herbicides and plant growth regulators.

Basic Information

Product Name	(4-Aminophenyl)Phosphonic Acid
CAS No.	5337-17-7
Molecular Formula	C6H8NO3P
Molecular Weight	173.11 g/mol
Synonyms	4-Aminophenylphosphonic Acid; p-Aminophenylphosphonic Acid; Phosphonic acid, P-(4-aminophenyl)-; 4-APPA; (4-Aminobenzene)phosphonic acid; 4-Aminobenzenephosphonic acid; 4-Phosphonylaniline; p-Phosphonylaniline
EINECS	226-260-8

Quality Control

Our (4-Aminophenyl)Phosphonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment ensures the material meets the stringent requirements for research and industrial synthesis.

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 light-sensitive; therefore, containers must be kept tightly sealed after opening to minimize exposure to atmospheric moisture and light.

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	≤ 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.