Description

n-Dodecylphosphonic Acid is a high-purity, long-chain organophosphorus compound that serves as a critical building block and surface modifier. Its unique amphiphilic structure, featuring a hydrophobic dodecyl chain and a hydrophilic phosphonic acid head group, makes it an exceptionally effective coupling agent and corrosion inhibitor. This product is essential for manufacturers in the electronics, coatings, and advanced materials sectors seeking to enhance adhesion, stability, and performance in demanding environments.

Application

• Surface Modification & Corrosion Inhibition: Forms robust, self-assembled monolayers (SAMs) on metal oxides (e.g., steel, aluminum, titanium), providing excellent corrosion resistance and promoting paint adhesion.
• Electronic Materials: Used as a key ligand and passivation agent in the synthesis of quantum dots, perovskites, and other nanomaterials for optoelectronic devices like LEDs and solar cells.
• Polymer Additives & Flame Retardants: Acts as a reactive intermediate in the production of specialized phosphonate esters used as plasticizers, stabilizers, and flame-retardant synergists.
• Lubricant & Fuel Additives: Serves as a precursor for anti-wear and extreme pressure (EP) additives in advanced lubricants and as a detergent/dispersant in fuel formulations.
• Ceramic & Composite Processing: Functions as a dispersant and coupling agent to improve the compatibility and distribution of inorganic fillers within polymer or ceramic matrices.
• Medical Device Coatings: Utilized to create biocompatible and anti-fouling surfaces on implants and diagnostic equipment.

Basic Information

Product Name	n-Dodecylphosphonic Acid
CAS No.	5137-70-2
Molecular Formula	C₁₂H₂₇O₃P
Molecular Weight	250.32 g/mol
Synonyms	Dodecylphosphonic Acid; Laurylphosphonic Acid; 1-Dodecanephosphonic Acid; Monododecylphosphonate; n-Dodecanephosphonic Acid; DPA-12; C12-Phosphonic Acid; Phosphonic acid, dodecyl-
EINECS	225-881-8

Quality Control

Every batch of n-Dodecylphosphonic Acid is manufactured and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets the precise requirements for advanced material synthesis and surface engineering applications. A Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is supplied with each shipment, ensuring full traceability and compliance with relevant industry standards.

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). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	95 - 105 °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.