Description

3,3,5-Trimethoxy-5-Methyl-2,6-Dioxa-3,5-Disilaheptane is a specialized organosilicon compound, specifically a silane coupling agent, with the CAS number 18297-80-8. This chemical is valued for its ability to form stable bonds between inorganic materials and organic polymers, enhancing composite material performance. It is primarily utilized by manufacturers in the advanced materials, electronics, and specialty chemical industries seeking to improve adhesion, dispersion, and moisture resistance in their products.

Application

• As a coupling agent in fiberglass-reinforced plastics and mineral-filled polymer composites to improve mechanical strength and moisture resistance.
• A key intermediate in the synthesis of advanced silicon-based polymers and resins for high-performance coatings and encapsulants.
• Surface modification of silica, glass, and other inorganic fillers to enhance compatibility and dispersion in organic matrices.
• Used in the formulation of adhesives and sealants to promote bonding to glass, metal, and ceramic substrates.
• Application in electronic packaging materials for improved reliability and protection against environmental stress.
• Potential use as a precursor in the production of silicone-modified organic compounds for tailored material properties.

Basic Information

Product Name	3,3,5-Trimethoxy-5-Methyl-2,6-Dioxa-3,5-Disilaheptane
CAS No.	18297-80-8
Molecular Formula	C9H24O5Si2
Molecular Weight	268.46 g/mol
Synonyms	Bis(trimethoxysilyl)methane; 1,1,3,3-Tetramethoxy-1,3-disilapropane; Methane, bis(trimethoxysilyl)-; Trimethoxysilylmethyltrimethoxysilane; 1,3-Bis(trimethoxysilyl)propane (common misnomer, corrects to methane bridge); Silaplane coupling agent; SIB1832.0 (potential commercial designation)
EINECS	Contact for details

Quality Control

Our production of 3,3,5-Trimethoxy-5-Methyl-2,6-Dioxa-3,5-Disilaheptane adheres to a stringent quality management system. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every 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). 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 absorption and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	~1.05 g/cm³
Refractive Index (n20D)	~1.410

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