Description

1,3-Diethynyltetramethyldisiloxane is a highly reactive organosilicon monomer featuring terminal ethynyl groups bridged by a disiloxane linkage. This compound matters as a critical building block in materials science, enabling the synthesis of advanced polymers and hybrid inorganic-organic networks through its dual reactive sites. It is primarily needed by R&D and production teams in the specialty chemicals, advanced materials, and electronics sectors for creating high-performance silicones, cross-linked resins, and precursors for ceramic materials.

Application

• Precursor for Silicon-Containing Polymers: Serves as a key monomer in the synthesis of poly(carbosilane)s and poly(silyleneethynylene)s for high-temperature stable materials.
• Cross-linking Agent: Used in the formulation of heat-curable silicone resins and rubbers, enhancing thermal and mechanical properties.
• Ceramic Precursor: A vital starting material in the production of silicon carbide (SiC) or silicon oxycarbide (SiOC) ceramics via polymer-derived ceramic (PDC) routes.
• Surface Modification: Employed to introduce ethynyl functional groups onto silicon-based surfaces for further chemical grafting.
• Hydrosilylation Reactions: Acts as a reactant in hydrosilylation chemistry to create novel organosilicon compounds with tailored properties.
• Research & Development: Utilized in academic and industrial labs for developing new hybrid materials, coatings, and composites.

Basic Information

Product Name	1,3-Diethynyltetramethyldisiloxane
CAS No.	4180-02-3
Molecular Formula	C8H14OSi2
Molecular Weight	182.37 g/mol
Synonyms	Bis(ethynyldimethylsilyl) ether; 1,3-Diethynyl-1,1,3,3-tetramethyldisiloxane; Tetramethyl-diethynyldisiloxane; Dimethyl(ethynyl)silyl ether; Disiloxane, 1,3-diethynyl-1,1,3,3-tetramethyl-; Ethynyldimethylsiloxane dimer
EINECS	Contact for details

Quality Control

Our 1,3-Diethynyltetramethyldisiloxane is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography and spectroscopy, to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing specific results is provided with every shipment to support your quality assurance and R&D documentation 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 and highly volatile nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture uptake and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Water Content (KF)	≤ 0.1%

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