Description

1-Thio-11-Undecanephosphonic Acid is a specialized organophosphorus compound featuring a long alkyl chain terminated by both thiol and phosphonic acid functional groups. This unique bifunctional structure makes it a valuable intermediate and surface-active agent for advanced material science and nanotechnology applications. It is particularly sought after by researchers and manufacturers in the fields of self-assembled monolayers (SAMs), corrosion inhibition, and metal surface modification.

Application

• Formation of self-assembled monolayers (SAMs) on metal surfaces, particularly gold, for sensor development and surface engineering.
• Acting as a corrosion inhibitor and adhesion promoter in coatings and primers for metals.
• Surface modification agent for nanoparticles and quantum dots to improve dispersion and functionalization.
• Intermediate in the synthesis of complex phosphonate-based ligands for catalysis and chelation.
• Research and development of novel materials for biomedical implants and diagnostic devices.
• Precursor for creating specialized surfactants and detergents with unique binding properties.

Basic Information

Product Name	1-Thio-11-Undecanephosphonic Acid
CAS No.	156125-36-9
Molecular Formula	C11H25O3PS
Molecular Weight	268.36 g/mol
Synonyms	11-Mercaptoundecylphosphonic Acid; 11-Thioundecylphosphonic Acid; Undecane-1-thiol, 11-phosphono-; 11-Phosphonoundecane-1-thiol; Mercaptoundecylphosphonic Acid; Thio-Undecanephosphonic Acid; SAM Precursor for Gold Surfaces; ω-Mercaptoalkylphosphonic Acid (C11)
EINECS	Contact for details

Quality Control

Our 1-Thio-11-Undecanephosphonic Acid is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure consistency and high performance for research and industrial applications. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This compound is moisture-sensitive (hygroscopic) and should be handled under an inert atmosphere for long-term stability.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (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.