Description

Bis(3-Hydroxypropyl)Dimethylsilane is a versatile organosilicon compound featuring both silane and terminal hydroxyl functionalities. This unique bifunctional structure makes it a valuable intermediate for synthesizing silicone-based polymers, cross-linkers, and surface-modifying agents. It is particularly sought after by manufacturers in the silicone elastomer, adhesive, sealant, and specialty coating industries for its ability to impart flexibility, adhesion, and moisture-curing properties.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linking agent in the synthesis of polyether-modified silicones and silicone polyols.
• Adhesive & Sealant Formulations: Used as an adhesion promoter and a reactive diluent in moisture-curing silicone sealants and RTV (Room Temperature Vulcanizing) adhesives.
• Surface Treatment Agent: Provides a reactive silane layer on inorganic surfaces like glass, metals, and minerals to improve compatibility with organic polymers.
• Pharmaceutical & Cosmetic Intermediates: Serves as a building block for synthesizing silicone-based quats, emulsifiers, and other specialty ingredients.
• Lubricant & Release Agent Additive: Incorporated to enhance the thermal stability and surface-active properties of industrial lubricants and mold release agents.
• Hybrid Material Synthesis: A key precursor in sol-gel processes for creating organic-inorganic hybrid (OIH) materials with tailored properties.

Basic Information

Product Name	Bis(3-Hydroxypropyl)Dimethylsilane
CAS No.	10325-32-3
Molecular Formula	C8H20O2Si
Molecular Weight	176.33 g/mol
Synonyms	Dimethylbis(3-hydroxypropyl)silane; 1,1-Dimethyl-1-sila-3,7-dioxaoctane; 3,3'-(Dimethylsilylene)di-1-propanol; Bis(3-hydroxypropyl)dimethylsilane; 3-[Dimethyl(3-hydroxypropyl)silyl]propan-1-ol; Dihydroxydimethylsilane dipropyl ether (related); Hydroxy-functional dimethylsilane
EINECS	233-710-7

Quality Control

Our Bis(3-Hydroxypropyl)Dimethylsilane is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing including GC, HPLC, and NMR to verify identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring it meets the agreed specifications for your application.

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). The product is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to prevent oxidation and hydrolysis.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.450 - 1.455
Density (20°C)	0.94 - 0.97 g/cm³

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