Description

Bis(Methyldimethoxysilyl)Methane CAS NO 18297-79-5 is a specialized organosilicon compound featuring two methyldimethoxysilyl groups linked by a methane bridge. This unique structure makes it a valuable bifunctional silane coupling agent and crosslinking precursor in advanced material synthesis. It is primarily utilized by manufacturers in the silicone polymers, adhesives, and coatings industries seeking to enhance material properties like adhesion, thermal stability, and moisture resistance.

Application

• Crosslinking Agent for Silicone Polymers: Used to create high-performance silicone elastomers and resins with improved mechanical strength and thermal stability.
• Surface Modification and Coupling Agent: Enhances the adhesion between inorganic fillers (like silica, glass) and organic polymer matrices in composite materials.
• Precursor for Hybrid Organic-Inorganic Materials (ORMOSILs): Serves as a key building block in sol-gel processes for producing advanced coatings, lenses, and optical materials.
• Waterproofing and Moisture-Curing Systems: Imparts water repellency and facilitates moisture-cure mechanisms in sealants, adhesives, and protective coatings.
• Adhesion Promoter: Improves the bond strength of paints, inks, and adhesives to difficult substrates such as metals, glass, and plastics.
• Intermediate for Specialty Silanes: Acts as a versatile synthetic intermediate for further chemical modifications to create custom silane functionalities.

Basic Information

Product Name	Bis(Methyldimethoxysilyl)Methane
CAS No.	18297-79-5
Molecular Formula	C7H20O4Si2
Molecular Weight	224.40 g/mol
Synonyms	Methane, bis[(methyldimethoxysilyl)]-; 1,1'-[Methylenebis(oxy)]bis[1,1-dimethylethoxysilane] (alternative representation); Bis(methyldimethoxysilyl)methane; Dimethoxymethylsilylmethane; (Dimethoxymethylsilyl)methane dimer; MDMSM; Silane coupling agent SCA-BMM; Contact for more synonyms.
EINECS	Contact for details

Quality Control

Our production of Bis(Methyldimethoxysilyl)Methane adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are provided with each shipment to guarantee traceability and compliance with your technical 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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20/D)	1.410 - 1.415
Density (g/mL, 20°C)	0.95 - 0.98

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