Description

3,3'-[(1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Bis(Oxy)]Dipropanol is a specialized organosilicon compound featuring a central disiloxane bridge flanked by propanol-terminated oxypropylene chains. This unique bifunctional structure, containing both hydrolytically stable siloxane linkages and reactive hydroxyl groups, makes it a valuable intermediate for creating hybrid organic-inorganic materials. It is primarily sought by formulators and researchers in the silicone, polymer, and advanced materials industries for applications requiring tailored surface properties, crosslinking, or compatibilization.

Application

• Silicone Modifier & Crosslinker: Acts as a chain extender or crosslinking agent in silicone elastomers and resins, imparting flexibility and modifying mechanical properties.
• Polymer Additive: Used to improve the compatibility, dispersion, and adhesion between organic polymers and inorganic fillers or surfaces.
• Surface Treatment Agent: Employed in coatings and surface modifications to enhance hydrophobicity, release properties, or chemical resistance.
• Precursor for Functional Silicones: Serves as a key intermediate in the synthesis of custom silicone polyethers, surfactants, and other specialty organosilicon compounds.
• Adhesive & Sealant Formulations: Incorporated into formulations to adjust cure profiles, adhesion, and the final network structure of silicone-based adhesives and sealants.
• Research & Development: Utilized in academic and industrial R&D for developing novel hybrid materials, dendrimers, and controlled-release systems.

Basic Information

Product Name	3,3'-[(1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Bis(Oxy)]Dipropanol
CAS No.	94158-22-2
Molecular Formula	C14H34O5Si2
Molecular Weight	350.59 g/mol
Synonyms	1,3-Bis(3-hydroxypropoxy)-1,1,3,3-tetramethyldisiloxane; α,ω-Bis(3-hydroxypropoxy)tetramethyldisiloxane; 3,3'-(Tetramethyldisiloxane-1,3-diyl)bis(oxy)dipropan-1-ol; Bis(3-hydroxypropyl) tetramethyldisiloxane diether; Hydroxypropyl-terminated polydimethylsiloxane (short chain); PDMS diol (low MW); Tetramethyldisiloxane di(3-hydroxypropyl ether); Siloxane diol
EINECS	Contact for details

Quality Control

Our production of 3,3'-[(1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Bis(Oxy)]Dipropanol adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. Certificates of Analysis (COA) detailing key specifications such as assay, hydroxyl value, and moisture content are provided to guarantee compliance with your technical requirements and support your quality assurance processes.

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). To prevent degradation and maintain product integrity, ensure containers are kept tightly sealed when not in use and consider storage under an inert atmosphere for long-term holding.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC or Titration)	≥ 95.0%
Hydroxyl Value	Contact for details
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	Contact for details
Density (20°C)	Contact for details

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