Description

Ethylidenebis(Trimethylsilane) is a versatile organosilicon compound, also known as 1,1-Bis(trimethylsilyl)ethylene, valued for its role as a key reagent and protecting group in advanced organic synthesis. Its primary commercial significance lies in its ability to introduce the highly reactive ethylidene unit under mild conditions, making it indispensable for constructing complex molecular architectures. This chemical is particularly sought after by R&D laboratories and production facilities in the pharmaceutical, agrochemical, and specialty materials sectors for synthesizing active ingredients, fine chemicals, and novel polymers.

Application

• As a crucial reagent in pharmaceutical intermediate synthesis, particularly for introducing ethylidene functional groups.
• Used as a protecting group for carbonyl compounds in multi-step organic synthesis.
• Employed in the production of specialty silicone polymers and resins with tailored properties.
• Acts as a precursor or catalyst component in olefin metathesis and other transition metal-catalyzed reactions.
• Utilized in agrochemical research for developing novel active ingredients.
• Applied in material science for surface modification and creating advanced hybrid materials.
• Serves as a building block in fine chemical and fragrance manufacturing.

Basic Information

Product Name	Ethylidenebis(Trimethylsilane)
CAS No.	18406-29-6
Molecular Formula	C8H20Si2
Molecular Weight	172.41 g/mol
Synonyms	1,1-Bis(trimethylsilyl)ethylene; Ethylidene-1,1-bis(trimethylsilane); (Ethylidene)bis(trimethylsilane); 1,1-Ethylidenebis(trimethylsilane); 1,1-Bis(trimethylsilyl)ethene; TMS-Ethylidene-TMS; Bis(trimethylsilyl)ethylene
EINECS	242-275-9

Quality Control

Our Ethylidenebis(Trimethylsilane) is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including GC, NMR, and Karl Fischer titration, to confirm identity, potency, and the absence of critical impurities. Certificates of Analysis (COA) detailing all test results are provided with every shipment and are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and potential concentration changes. Recommended storage temperature is 2-8°C for long-term stability, although short-term storage at 15-25°C is acceptable.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%

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