Name: Evonik Dynasylan OCTCS Octyltrichlorosilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Evonik Dynasylan OCTCS Octyltrichlorosilane

Highly effective hydrophobizing agent for silica, glass, and metal oxide surfaces.
Reacts rapidly via hydrolysis and condensation to form stable covalent Si–O–substrate bonds.
Imparts excellent water repellency and reduced surface energy without compromising substrate integrity.
Low volatility and controlled reactivity enable precise surface modification in industrial processes.
Compatible with solvent-based and aqueous-organic hybrid systems for flexible formulation integration.

Typical Applications Of Evonik Dynasylan OCTCS Octyltrichlorosilane

Surface treatment of fumed and precipitated silica for rubber and polymer reinforcement.
Hydrophobization of glass fibers used in composites and insulation materials.
Pre-treatment of aluminum, steel, and zinc substrates prior to painting or adhesive bonding.
Functionalization of ceramic fillers and pigments to improve dispersion in non-polar matrices.
Moisture barrier enhancement in coatings, sealants, and construction adhesives.

Chemical Type	Organofunctional chlorosilane (alkyltrichlorosilane)
Product Form	Liquid
Appearance	Colorless to pale yellow clear liquid
Molecular Formula	C₈H₁₇SiCl₃
Molecular Weight	241.67 g/mol
Density (20 °C)	1.05–1.07 g/cm³
Boiling Point	245–247 °C (at 760 mmHg)
Solubility	Miscible with common organic solvents (e.g., toluene, xylene, acetone); reacts with water

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