Description

Methylethoxydichlorosilane is a highly reactive organosilicon compound primarily used as a key intermediate in silicone chemistry. Its bifunctional nature, featuring both ethoxy and chloro substituents, makes it a versatile building block for introducing specific organic groups into siloxane polymers and networks. This chemical is essential for manufacturers in the silicone, pharmaceutical, and advanced materials sectors seeking to synthesize custom silanes, surface modifiers, and specialized silicone resins with controlled properties.

Application

• Silicone Intermediate: A crucial precursor for the synthesis of various methylalkylsiloxanes and cross-linking agents used in silicone elastomers, resins, and fluids.
• Surface Modification: Used as a silylating agent to impart hydrophobic or specific functional properties to inorganic surfaces like silica, glass, and metals.
• Pharmaceutical Synthesis: Serves as a protecting group or intermediate in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Adhesive & Sealant Formulation: Functions as an adhesion promoter and cross-linker in high-performance silicone-based adhesives and sealants.
• Polymer Modification: Employed to graft silane functionalities onto organic polymer backbones, enhancing compatibility, weather resistance, or adhesion.
• Nanomaterial Synthesis: Used in the functionalization of nanoparticles and the sol-gel process for creating hybrid organic-inorganic materials.

Basic Information

Product Name	Methylethoxydichlorosilane
CAS No.	1825-75-8
Molecular Formula	C3H8Cl2OSi
Molecular Weight	159.08 g/mol
Synonyms	Dichloro(methyl)ethoxysilane; Ethoxymethyldichlorosilane; Methyl(ethoxy)dichlorosilane; Methylethoxydichlorosilane; Dichloroethoxy(methyl)silane; Silane, dichloroethoxy-methyl-; Methyl dichloroethoxysilane; Ethyl methyldichlorosilicate (common name)
EINECS	217-374-1

Quality Control

Our Methylethoxydichlorosilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including GC and NMR analysis, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flame. Due to its highly volatile and hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and degradation. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Density (at 20°C)	1.10 - 1.15 g/mL
Refractive Index (n20D)	1.405 - 1.415
Water Content (Karl Fischer)	≤ 0.1%

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