Diethoxydimethylsilane

Basic Information

CAS No.	78-62-6
EC No.	201-127-6
Linear Formula	(CH3)2Si(OC2H5)2
Molecular Weight	148.28 g/mol
Appearance	Colorless liquid
Melting Point	-97 °C (lit.)
Boiling point	112-113 °C (lit.)
Density	0.865 g/mL at 25 °C (lit.)
RIDADR	UN 1993 Class 3 Packing Group III
Chemical Structure

Key Applications

• Silicone polymer crosslinking: Used as coupling agent in RTV silicones and sealants.

• Surface hydrophobization: Applied for treating fillers and fibers in composites.

• Coating modifier: Incorporated in paints and varnishes for improved adhesion.

• Textile treatment: Employed in fabric finishing for water repellency.

• Adhesive formulation: Serves as additive in structural adhesives.

• High purity specifications and strict batch consistency: Controlled through detailed analytical verification.

• Stable export supply supported by established logistics channels: Ensures timely international shipments.

• Complete SDS, COA and dangerous goods documentation available: Facilitates compliant handling worldwide.

• Professional technical communication and responsive service: Provides guidance on product integration.

Hazards Classification

GHS Classification: Flammable liquids Category 3 (GHS02).

Hazard Statements: H226 Flammable liquid and vapour.

UN Number: 1993

Hazard Class: 3 (Flammable liquids)

Packing Group: III

Flammable liquid sensitive to moisture. Store in tightly closed containers in a cool, dry, well-ventilated area away from ignition sources. Handle with grounded equipment and PPE to prevent static discharge.