Description

Tris(Trimethylsiloxy)Silanol CAS NO 74098-43-4 is a specialized organosilicon compound featuring a reactive silanol group capped with three trimethylsiloxy moieties. This unique structure makes it a valuable intermediate and surface-modifying agent, offering enhanced compatibility and reactivity in advanced material formulations. It is primarily sought by manufacturers in the silicone polymers, coatings, and electronics industries for developing high-performance, hydrophobic, and release materials.

Application

• Silicone Resin & Polymer Modification: Acts as a chain extender, cross-linking agent, or endblocker to tailor the properties of silicone elastomers and resins, improving flexibility, thermal stability, and surface characteristics.
• Surface Treatment & Coatings: Used to impart durable hydrophobicity, oleophobicity, and release properties to surfaces of glass, metals, ceramics, and textiles.
• Adhesive & Sealant Formulations: Serves as an adhesion promoter and rheology modifier in high-performance silicone-based adhesives and sealants.
• Electronics Encapsulation: Employed in potting compounds and protective coatings for electronic components due to its excellent dielectric properties and moisture resistance.
• Personal Care & Cosmetics: Functions as a conditioning agent and film-former in hair care and skincare products, providing a silky, non-greasy feel.
• Pharmaceutical Intermediates: Utilized in the synthesis of sophisticated drug delivery systems and active pharmaceutical ingredients (APIs) requiring specific siloxane functionalities.

Basic Information

Product Name	Tris(Trimethylsiloxy)Silanol
CAS No.	74098-43-4
Molecular Formula	C9H28O4Si4
Molecular Weight	312.68 g/mol
Synonyms	Tris(trimethylsiloxy)silane-1-ol; Silanol, tris(trimethylsiloxy)-; Tris-O-(trimethylsilyl) silanol; Hydroxytris(trimethylsiloxy)silane; TTSS; Tris(trimethylsilyloxy)silanol; (Hydroxy)tris(trimethylsiloxy)silane
EINECS	Contact for details

Quality Control

Our Tris(Trimethylsiloxy)Silanol is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing specific batch results 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 room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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