Description

11-Mercaptoundecanoic Acid is a high-purity, long-chain alkanethiol carboxylic acid that serves as a critical functional building block in advanced material science. Its unique bifunctional structure, featuring both a terminal thiol (-SH) and a carboxylic acid (-COOH) group, enables precise surface modification and controlled molecular assembly. This compound is essential for researchers and manufacturers in nanotechnology, biosensor development, and specialty polymer synthesis who require reliable, high-quality intermediates for creating self-assembled monolayers (SAMs) and functional coatings.

Application

• Surface Functionalization & Self-Assembled Monolayers (SAMs): Used to create well-ordered, covalently bonded monolayers on gold, silver, and other metal surfaces for corrosion inhibition, lubrication, and creating specific surface chemistries.
• Biosensor & Diagnostic Platforms: Acts as a linker molecule to immobilize biomolecules (proteins, DNA) onto transducer surfaces, enhancing sensitivity and stability in diagnostic devices.
• Nanoparticle Capping & Stabilization: Employed to functionalize and stabilize metal nanoparticles (e.g., gold nanorods, quantum dots) for biomedical imaging, drug delivery, and catalysis.
• Polymer Modification & Cross-linking: Serves as a chain transfer agent or cross-linker in polymer synthesis, introducing thiol groups for further conjugation or to modify material properties.
• Lubricant & Additive Synthesis: A key intermediate in producing extreme pressure (EP) additives and specialty lubricants where the thiol group provides anti-wear properties.
• Corrosion Inhibitor Formulations: Incorporated into coatings and formulations to provide protective layers on metal substrates.

Basic Information

Product Name	11-Mercaptoundecanoic Acid
CAS No.	71310-21-9
Molecular Formula	C11H22O2S
Molecular Weight	218.36 g/mol
Synonyms	11-Mercaptoundecanoic Acid; Undecane-11-thioic Acid; 11-Sulfanylundecanoic Acid; 11-Mercaptoundecanoic Acid; 11-Thioundecanoic Acid; 11-MUA; MUA; 11-Mercapto-1-undecanoic Acid; ω-Mercaptoundecanoic Acid
EINECS	Contact for details

Quality Control

Our 11-Mercaptoundecanoic Acid is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and titration methods, to ensure high purity and consistent performance. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting identity, purity, and impurity profiles to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to minimize oxidation and degradation. Keep the container in a cool, dry, well-ventilated area away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	48 - 52 °C
Loss on Drying	≤ 0.5%

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