Description

12-Mercaptododecylphosphonic Acid is a specialized organophosphorus compound featuring both a thiol (mercapto) and a phosphonic acid functional group on a long alkyl chain. This unique bifunctional structure makes it a highly effective surface modifier and coupling agent, crucial for creating robust interfaces between inorganic materials and organic polymers or coatings. It is essential for manufacturers and R&D teams in the advanced materials, nanotechnology, and electronics sectors who require precise control over surface properties, adhesion, and corrosion resistance. The compound is supplied under strict quality control to ensure batch-to-batch consistency for demanding industrial applications.

Application

• Surface Modification of Metal Oxides: Acts as a powerful anchor molecule for functionalizing nanoparticles (e.g., TiO2, ZnO, Fe3O4) and metal surfaces (aluminum, steel) to impart specific chemical functionality, improve dispersion in polymers, or prevent agglomeration.
• Corrosion Inhibition Coatings: Used as an additive in protective coatings and primers where the phosphonic acid group chelates to metal substrates, forming a stable, self-assembled monolayer that enhances adhesion and provides a barrier against corrosion.
• Dental and Biomedical Composites: Serves as a coupling agent in dental restorative materials and bone cements to strengthen the bond between inorganic fillers (e.g., glass, hydroxyapatite) and the organic resin matrix, improving mechanical properties.
• Lubricant and Anti-Wear Additives: The thiol and phosphonic acid groups can chemisorb onto metal surfaces under extreme pressure, forming protective films that reduce friction and wear in advanced lubricant formulations.
• Sensor and Diagnostic Platforms: Facilitates the stable immobilization of biomolecules (proteins, DNA) onto gold or metal oxide sensor surfaces via the thiol group, enabling the development of biosensors and diagnostic assays.
• Adhesion Promotion in Electronics: Enhances the adhesion of polymeric encapsulants, underfills, and photoresists to copper or other metal traces in printed circuit boards (PCBs) and microelectronic devices.

Basic Information

Product Name	12-Mercaptododecylphosphonic Acid
CAS No.	159239-33-5
Molecular Formula	C₁₂H₂₇O₃PS
Molecular Weight	282.38 g/mol
Synonyms	Dodecylphosphonic acid, 12-mercapto-; 12-Sulfanyldodecylphosphonic acid; 1-Mercaptododecane-12-phosphonic acid; (12-Mercaptododecyl)phosphonic acid; Phosphonic acid, P-(12-mercaptododecyl)-; Thiol-terminated alkylphosphonic acid C12; 12-Mercapto-1-dodecanephosphonic acid
EINECS	Contact for details

Quality Control

Every batch of 12-Mercaptododecylphosphonic Acid is produced and analyzed under a strict quality management system. We provide comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles to ensure the material meets your specific application requirements. Our quality protocols are designed to support ISO 9001 compliant manufacturing and REACH regulatory obligations, providing you with full traceability and supply chain confidence.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C under an inert atmosphere (e.g., nitrogen or argon) due to its sensitivity to moisture and oxidation. Keep away from strong oxidizing agents and bases. For long-term storage, consider refrigeration at 2-8°C.

Specification

Item	Specification
Appearance	White to off-white waxy solid or powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details

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