Description

n-Octylphosphonic Acid is a high-purity, synthetic organophosphorus compound characterized by its amphiphilic structure, combining a hydrophobic alkyl chain with a hydrophilic phosphonic acid headgroup. This unique molecular architecture makes it an exceptionally versatile intermediate and functional additive for advanced material synthesis. It is critically important for industries requiring precise surface modification, metal chelation, or the creation of specialized polymers. Key sectors that utilize this compound include electronics, specialty polymers, and industrial catalysis.

Application

• Metal Extraction & Separation: Acts as a selective extractant and chelating agent in hydrometallurgical processes for the recovery of rare earth elements and transition metals.
• Surface Modification Agent: Used to form self-assembled monolayers (SAMs) on metal oxide surfaces (e.g., aluminum, titanium) to alter wettability, corrosion resistance, and adhesion properties.
• Polymer Additive & Monomer: Serves as a flame-retardant additive or a reactive monomer for synthesizing phosphonate-containing polymers with enhanced thermal stability and metal-binding capacity.
• Lubricant & Anti-wear Additive: Incorporated into advanced lubricant formulations where its phosphonic acid group chemisorbs to metal surfaces, reducing friction and wear.
• Catalysis & Ligand Synthesis: Employed as a precursor for synthesizing organophosphorus ligands used in homogeneous catalysis and as a catalyst itself in certain organic transformations.
• Nanomaterial Synthesis: Functions as a stabilizing and functionalizing agent in the synthesis and dispersion of nanoparticles, particularly metal oxides.

Basic Information

Product Name	n-Octylphosphonic Acid
CAS No.	4724-48-5
Molecular Formula	C8H19O3P
Molecular Weight	194.21 g/mol
Synonyms	Octylphosphonic Acid; 1-Octanephosphonic Acid; Mono-n-octylphosphonic Acid; OPA; n-Octanephosphonic Acid; Phosphono-octanoic Acid; n-C8-PA; Octylphosphonate
EINECS	225-214-8

Quality Control

Our n-Octylphosphonic Acid is manufactured under a stringent quality management system. Every 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 research and industrial applications. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability and consistent purity.

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). This product is hygroscopic (moisture-sensitive) and should be handled under a dry atmosphere to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or waxy solid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 97.0%
Melting Point	88 - 92 °C
Water Content (KF)	≤ 0.5%

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