Description

1,1,3,3-Tetramethyl-1,3-Bis[2-(5-Norbornen-2-Yl)Ethyl]Disiloxane is a specialized organosilicon compound featuring a reactive norbornenyl functional group. This chemical is valued for its role as a key intermediate or cross-linking agent in advanced polymer synthesis, particularly in the production of high-performance silicones and addition-cure systems. It is primarily utilized by R&D chemists and manufacturers in the silicone elastomer, adhesive, and advanced materials sectors seeking to enhance thermal stability and mechanical properties.

Application

• Key monomer or cross-linker in the synthesis of addition-cure silicone rubbers and resins.
• Intermediate for producing specialized polysiloxanes with tailored properties for high-temperature applications.
• Component in the formulation of advanced release coatings and pressure-sensitive adhesives (PSAs).
• Used in the development of silicone-based encapsulants and potting compounds for electronics.
• Building block for creating novel hybrid organic-inorganic materials (ORMOSILs).
• Research chemical for developing new polymers with norbornene functionality via hydrosilylation or ring-opening metathesis polymerization (ROMP).

Basic Information

Product Name	1,1,3,3-Tetramethyl-1,3-Bis[2-(5-Norbornen-2-Yl)Ethyl]Disiloxane
CAS No.	198570-39-7
Molecular Formula	C24H42OSi2
Molecular Weight	402.77 g/mol
Synonyms	1,3-Bis(2-(5-norbornen-2-yl)ethyl)-1,1,3,3-tetramethyldisiloxane; Tetramethyl-bis(2-(5-norbornen-2-yl)ethyl)disiloxane; Norbornenyl-Functional Disiloxane; 1,1,3,3-Tetramethyl-1,3-bis(2-(bicyclo[2.2.1]hept-5-en-2-yl)ethyl)disiloxane; 2,2,4,4-Tetramethyl-2,4-bis[2-(5-norbornen-2-yl)ethyl]-1,3,2,4-dioxadisiletane (alternative representation); NB-Disiloxane; BNBES (abbreviation); Vinylnorbornene Ethyl Tetramethyldisiloxane
EINECS	Contact for details

Quality Control

Our 1,1,3,3-Tetramethyl-1,3-Bis[2-(5-Norbornen-2-Yl)Ethyl]Disiloxane is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key specifications are provided to guarantee compliance with your research and manufacturing 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC or HPLC)	≥ 95.0%
Water Content (Karl Fischer)	≤ 0.5%

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