Description

Diallyldimethoxysilane CAS NO 18919-80-7 is a versatile organosilicon compound featuring both allyl and methoxy functional groups, making it a valuable bifunctional monomer and coupling agent. Its primary commercial value lies in its ability to undergo hydrosilylation and hydrolysis reactions, enabling the synthesis of specialized polymers and surface modifications. This chemical is essential for manufacturers in the silicone rubber, adhesive, and advanced material coating industries seeking to enhance cross-linking density and adhesion properties.

Application

• Cross-linking Agent for Silicone Polymers: Used to introduce unsaturated allyl groups into silicone networks, improving the mechanical strength and thermal stability of high-performance silicone rubbers and resins.
• Surface Modification and Coupling Agent: Acts as an adhesion promoter between inorganic fillers (like silica) and organic polymer matrices in composite materials, enhancing dispersion and mechanical properties.
• Precursor for Specialty Silanes: Serves as a key intermediate in the synthesis of more complex functional silanes used in electronics and optics.
• Component in Release Coatings: Incorporated into formulations for paper and film release liners, providing controlled release characteristics.
• Waterproofing Agent: Used in treatments for textiles, construction materials, and stone to impart hydrophobic properties.
• Adhesive and Sealant Formulations: Enhances the adhesion and durability of sealants and adhesives, particularly in demanding environments.

Basic Information

Product Name	Diallyldimethoxysilane
CAS No.	18919-80-7
Molecular Formula	C8H16O2Si
Molecular Weight	172.30 g/mol
Synonyms	Dimethoxydiallylsilane; Diallyl(dimethoxy)silane; (Dimethoxysilyl)diallyl; Allyldimethoxysilane (common name); DADMS; Silane, diallyldimethoxy-; 1,1-Dimethoxy-2,5-dihydrosilole (derivative form); Bis(allyl)dimethoxysilane
EINECS	242-695-5

Quality Control

Our Diallyldimethoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications for industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and open flame. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature is 2-25°C. Keep away from strong oxidizing agents and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.89 - 0.91 g/mL
Refractive Index (n20/D)	1.420 - 1.425

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