Description

n-Hexadecylphosphonic Acid is a high-purity, long-chain organophosphorus compound with a well-defined molecular structure. This material serves as a critical surface modifier and coupling agent, enabling strong, durable bonds between inorganic substrates and organic matrices. It is essential for manufacturers in the advanced materials, electronics, and specialty coatings sectors seeking to enhance material performance and durability. Its specific molecular architecture provides superior self-assembly and adhesion properties.

Application

• Surface Modification Agent: For functionalizing metal oxides (e.g., titanium dioxide, zinc oxide, ITO) to alter surface energy, improve dispersion, or introduce specific chemical functionality.
• Corrosion Inhibitor & Protective Coating Precursor: Used to form stable, self-assembled monolayers (SAMs) on steel, aluminum, and other metals for corrosion protection.
• Adhesion Promoter: Enhances the bond strength between inorganic fillers or pigments and polymer resins in composite materials, paints, and sealants.
• Lubricant & Release Agent Additive: Incorporated into formulations to reduce friction and improve surface release properties.
• Nanomaterial Synthesis: Acts as a capping or stabilizing agent in the synthesis of nanoparticles to control growth and prevent aggregation.
• Electronic Materials: Used in the fabrication of organic thin-film transistors (OTFTs) and other electronic devices as a dielectric interface layer.

Basic Information

Product Name	n-Hexadecylphosphonic Acid
CAS No.	4721-17-9
Molecular Formula	C₁₆H₃₅O₃P
Molecular Weight	306.42 g/mol
Synonyms	Hexadecylphosphonic Acid; Cetylphosphonic Acid; 1-Hexadecanephosphonic Acid; Palmitylphosphonic Acid; n-Cetylphosphonic Acid; Phosphonic acid, hexadecyl-; Phosphonohexadecanoic Acid
EINECS	225-207-4

Quality Control

Our n-Hexadecylphosphonic Acid is manufactured under a strict quality management system. Each batch is subjected to rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets exacting specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance for your applications.

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 material is hygroscopic (moisture-sensitive) and a strong acid/organic solvent; keep the container tightly sealed when not in use and store away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	95 - 105 °C
Loss on Drying	≤ 1.0 %

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