Description

Ethyltrichlorosilane is a highly reactive organosilicon compound and a key intermediate in the synthesis of silicone polymers and functional silanes. Its value lies in its ability to introduce ethyl groups and reactive chlorosilane sites into molecules, enabling the creation of specialized materials with tailored properties. This product is essential for manufacturers in the silicone industry, chemical synthesis, and surface treatment sectors seeking to develop hydrophobic coatings, adhesion promoters, and advanced polymeric materials.

Application

• Silicone Intermediate: A fundamental building block for the production of ethyl-substituted silicone fluids, resins, and elastomers.
• Surface Modification Agent: Used to impart hydrophobic properties to glass, silica, and other mineral surfaces.
• Adhesion Promoter: Serves as a coupling agent in composite materials to enhance bonding between organic polymers and inorganic substrates.
• Chemical Synthesis: A versatile reagent for introducing the ethyltrichlorosilyl group in organic and organometallic synthesis.
• Nanomaterial Functionalization: Employed to modify nanoparticles and nanotubes for improved dispersion and compatibility in various matrices.
• Water Repellent Coatings: A key component in formulations for creating durable, water-resistant coatings on construction materials.

Basic Information

Product Name	Ethyltrichlorosilane
CAS No.	115-21-9
Molecular Formula	C2H5Cl3Si
Molecular Weight	163.51 g/mol
Synonyms	Trichloroethylsilane; Ethylsilicon trichloride; ETCS; Ethyltrichlorosilane; Silane, trichloroethyl-; NSC 8828; Ethyl-trichlorosilane; Aethyltrichlorsilan (German)
EINECS	204-071-8

Quality Control

Our Ethyltrichlorosilane is manufactured under stringent process controls to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical testing, including gas chromatography (GC) for assay and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with agreed specifications.

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 nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Recommended storage temperature: 2-8°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (at 20°C)	1.24 - 1.26 g/mL
Boiling Point	98 - 100°C
Refractive Index (n20D)	1.425 - 1.429

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