Description

2-Hydroxy-3-[3-(Trihydroxysilyl)Propoxy]Propane-1-Sulphonic Acid is a specialized organosilicon sulfonate compound, valued for its unique bifunctional chemistry that combines a reactive silanol group with a hydrophilic sulfonic acid moiety. This dual functionality makes it a critical intermediate and performance additive for creating durable, water-compatible surface modifications. It is essential for industries requiring advanced adhesion promotion, surface wetting, and permanent hydrophilic or anti-fog properties in their materials and coatings.

Application

• Surface Modification & Coupling Agent: A key intermediate for synthesizing advanced silane coupling agents used to improve adhesion between organic polymers and inorganic substrates like glass, metals, and minerals.
• Hydrophilic Coatings & Films: Imparts permanent anti-fog and hydrophilic properties to optical lenses, protective films, and medical device coatings.
• Textile & Fiber Treatment: Used to create durable hydrophilic finishes on synthetic fibers, enhancing moisture wicking and dyeability.
• Personal Care & Cosmetics: Serves as a conditioning agent and film-former in hair care and skincare formulations, providing smoothness and moisture retention.
• Adhesive & Sealant Formulations: Enhances the wetting, adhesion, and moisture resistance of epoxy, polyurethane, and acrylic-based systems.
• Paper & Packaging Coatings: Improves water dispersibility and surface properties of functional coatings for paper and board.
• Chromatography & Separation Media: Utilized in the functionalization of silica gel for hydrophilic interaction liquid chromatography (HILIC) and other separation techniques.

Basic Information

Product Name	2-Hydroxy-3-[3-(Trihydroxysilyl)Propoxy]Propane-1-Sulphonic Acid
CAS No.	70869-38-4
Molecular Formula	C6H16O8SSi
Molecular Weight	276.34 g/mol
Synonyms	3-(Trihydroxysilyl)propyl sulfonate glycerol ether; Glycerol 1-sulfonate 3-[3-(trihydroxysilyl)propyl] ether; Silane sulfonic acid derivative; SIT 8375.0 (commercial equivalent); Hydrophilic silane sulfonate; (3-Glycidyloxypropyl)silane trisulfonate derivative; 1-Sulfo-3-[3-(trihydroxysilyl)propoxy]-2-propanol; Organosilicon sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 2-Hydroxy-3-[3-(Trihydroxysilyl)Propoxy]Propane-1-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including assay by titration, identification by FT-IR, and control of key impurities, to ensure consistency and performance. Certificates of Analysis (COA) documenting purity, physical properties, and stability are available upon request to support your quality assurance and regulatory compliance needs.

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 compound is hygroscopic (moisture-sensitive). To prevent degradation and maintain efficacy, the container must be kept tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to reference spectrum
Assay (Titration)	≥ 95.0 %
Water Content (KF)	≤ 3.0 %
pH (5% aqueous solution)	2.0 - 4.0
Refractive Index (n20D)	1.450 - 1.470
Density (20°C)	1.25 - 1.35 g/cm³

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