Description

4,8-Dioxa-3,9-Disilaundecane, 2,2,3,3,9,9,10,10-Octamethyl- is a high-purity organosilicon compound, specifically a linear siloxane ether, valued for its unique hybrid organic-inorganic structure. This compound serves as a versatile intermediate and functional additive in advanced material synthesis, offering properties like thermal stability and hydrophobicity. It is primarily needed by manufacturers in the silicone polymers, specialty coatings, and electronics industries for developing high-performance products.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linking agent to tailor the flexibility, thermal stability, and mechanical properties of silicone elastomers and resins.
• Surface Treatment & Coatings: Used as a precursor for creating hydrophobic, oleophobic, or release coatings on textiles, paper, and various substrates.
• Adhesive & Sealant Formulations: Imparts improved adhesion, moisture resistance, and durability in high-performance silicone-based adhesives and sealants.
• Electronics Encapsulation: Employed in the formulation of protective potting compounds and encapsulants for electronic components due to its electrical insulation properties.
• Specialty Lubricants & Greases: Serves as a base fluid or additive in high-temperature, non-flammable lubricants for demanding industrial applications.
• Pharmaceutical & Cosmetic Intermediates: Utilized in the synthesis of siloxane-based ingredients for controlled-release drug delivery systems and personal care products.

Basic Information

Product Name	4,8-Dioxa-3,9-Disilaundecane, 2,2,3,3,9,9,10,10-Octamethyl-
CAS No.	82112-22-9
Molecular Formula	C11H28O2Si2
Molecular Weight	248.51 g/mol
Synonyms	1,3-Bis(trimethylsiloxy)-2,2-dimethylpropane; 2,2-Dimethyl-1,3-bis(trimethylsiloxy)propane; 2,2-Dimethylpropane-1,3-diyl bis(trimethylsilyl) ether; Bis(trimethylsiloxy)-2,2-dimethylpropane; 1,3-Propanediol, 2,2-dimethyl-, bis(trimethylsilyl) ether; DMS-B25 (potential trade name); Linear siloxane ether; Organosilicon ether
EINECS	Contact for details

Quality Control

Our production of 4,8-Dioxa-3,9-Disilaundecane, 2,2,3,3,9,9,10,10-Octamethyl- adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to guarantee traceability and compliance with customer and industry requirements.

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 after opening to prevent degradation due to atmospheric moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.4080 - 1.4120
Density (20°C)	0.86 - 0.90 g/mL

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