Description

3-(Trihydroxysilyl) Propane-1-Sulfonic Acid is a unique organosilicon compound featuring both silanol and sulfonic acid functional groups, offering powerful surface modification and ionic properties. This dual functionality makes it an exceptional coupling agent and hydrophilic modifier for enhancing the compatibility and performance of materials. It is essential for industries requiring advanced surface engineering, durable adhesion, and controlled hydrophilicity in demanding environments.

Application

• Surface Modification Agent: Used to impart permanent hydrophilicity and improve wetting properties to glass, silica, metals, and various polymers.
• Adhesion Promoter: Acts as a key component in primers and coatings to enhance adhesion between inorganic substrates (like glass or metal) and organic polymers (such as epoxies, polyurethanes).
• Composite Material Fabrication: Serves as a coupling agent in fiberglass-reinforced plastics, mineral-filled composites, and silica-reinforced rubber to improve mechanical strength and interfacial bonding.
• Chromatography Media: Utilized in the functionalization of silica gel for HPLC columns to create stable, hydrophilic stationary phases.
• Antifogging Coatings: A critical raw material in formulating durable antifogging layers for optical lenses, mirrors, and protective screens.
• Biomaterial Functionalization: Applied to modify the surface of biomedical devices and implants to increase biocompatibility and protein resistance.
• Textile Treatment: Imparts durable hydrophilic and antistatic finishes to synthetic fibers and fabrics.
• Personal Care Products: Used in hair care and skincare formulations as a conditioning agent and to improve product substantivity to surfaces.

Basic Information

Product Name	3-(Trihydroxysilyl) Propane-1-Sulfonic Acid
CAS No.	70942-24-4
Molecular Formula	C3H10O6SSi
Molecular Weight	202.27 g/mol
Synonyms	1-Propanesulfonic acid, 3-(trihydroxysilyl)-; (3-Sulfopropyl)trihydroxysilane; 3-(Trihydroxysilyl)-1-propanesulfonic acid; Silane, (3-sulfopropyl)trihydroxy-; SIP 6602.0 (common trade name); Hydrophilic silane sulfonate; Sulfonic acid functional silane; Organosilane sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 3-(Trihydroxysilyl) Propane-1-Sulfonic Acid adheres to a strict quality management system. Every batch is analyzed to ensure consistent purity, reactivity, and performance. Key parameters including assay, ionic content, and silanol functionality are verified. Certificates of Analysis (COA) documenting all test results are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature condensation/polymerization.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0 %
Sulfonic Acid Content	Contact for details
Silanol Content	Contact for details
Water Content (KF)	≤ 1.0 %
pH (in solution)	Contact for details
Refractive Index	Contact for details

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