Chemical Name: n-Octyltrimethoxysilane

Chemical Name


Structural Formula


Physical Indicators

CAS NO: 3069-40-7 Density (20 ℃, g/cm3): 0.9020~0.9120 Boiling point: 241.5 ℃ Flash point: 102.2 ℃ Refractive index (n25D): 1.4120~1.4220 Appearance: Colorless transparent liquid. Solubility: Soluble in alcohol, insoluble in water, hydrolyzable.


1. Widely used for waterproof and anti-seepage treatment of cement-based and natural stone surfaces, with excellent waterproof effects; 2. Used for surface treatment of various powders, especially titanium dioxide; 3. Used for the treatment of wear-resistant carbon black, it can significantly improve the dispersibility of white carbon black when used together with white carbon black in rubber; 4. As an additive to cement concrete, it can effectively improve the impermeability performance of cement buildings such as dams.


5kg/pot, 10kg/pot, 25 kg/barrel, 200kg/barrel, 1000kg/IBC, etc

Storage Conditions

Sealed, cool at room temperature, dry and ventilated, away from flames and heat sources


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