Description

1,2-Bis(Tetramethyldisiloxanyl)Ethane is a specialized organosilicon compound featuring a central ethane bridge flanked by tetramethyldisiloxanyl groups. This unique molecular architecture provides exceptional thermal stability and hydrophobic character, making it a valuable intermediate and functional additive in advanced material synthesis. It is particularly sought after by manufacturers in the silicone polymer, electronics, and specialty coatings industries. Its utility stems from its ability to act as a chain extender or cross-linking agent, imparting specific performance properties to final products.

Application

• Silicone Polymer Modification: Used as a chain extender or cross-linker to enhance the thermal stability, flexibility, and hydrophobic properties of silicone elastomers and resins.
• Release Coatings & Molding Agents: Serves as a key intermediate in formulating high-performance, non-stick release coatings for industrial and food-contact applications.
• Electronic Encapsulants & Sealants: Incorporated into silicone-based potting compounds and sealants to improve moisture resistance and long-term reliability in electronic assemblies.
• Specialty Lubricants & Greases: Acts as a base fluid or additive in high-temperature, chemically resistant lubricants for demanding industrial environments.
• Surface Treatment & Hydrophobic Agents: Utilized to modify surface properties of materials, providing water-repellent and anti-stick characteristics.
• Pharmaceutical & Cosmetic Intermediates: Employed in the synthesis of siloxane-based ingredients for controlled-release drug delivery systems and personal care products.

Basic Information

Product Name	1,2-Bis(Tetramethyldisiloxanyl)Ethane
CAS No.	229621-70-9
Molecular Formula	C10H30O2Si4
Molecular Weight	306.78 g/mol
Synonyms	1,2-Bis(1,1,3,3-tetramethyldisiloxan-1-yl)ethane; Ethane, 1,2-bis[(1,1,3,3-tetramethyldisiloxanyl)-; 1,1,3,3-Tetramethyl-1,3-bis(2-(1,1,3,3-tetramethyldisiloxanyl)ethyl)disiloxane (related isomer); TMDS Ethane; Bis(tetramethyldisiloxanyl)ethane; Hexamethyltrisiloxane, 1,3-bis(2-silanylethyl)-1,1,3,3-tetramethyl-; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our production of 1,2-Bis(Tetramethyldisiloxanyl)Ethane adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. All materials undergo rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (NMR, IR), to verify identity, potency, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The container should be kept tightly sealed when not in use to minimize moisture absorption and prevent contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20/D)	1.4050 - 1.4100
Density (20°C)	0.88 - 0.92 g/mL

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