Silane | Silanes | Alkyl & Alkoxy Silanes | Surface Modifier | Hydrophobing Agents | Water Repellent

SiSiB® PC5904

Synonym: Methyloctyldiethoxysilane

Chemical Structure


SiSiB® PC5904 is a monomeric medium-chain alkylfunctional silane. It is a clear colourless liquid and soluble in common non-polar organic solvent.

Typical Physical Properties

Chemical Name: Octylmethyldiethoxysilane
CAS No.: 2652-38-2
Empirical Formula: C13H30O2Si
Molecular Weight: 246.46
Boiling Point: 82°C [2mmHg]
Flash Point: 110°C
Color and Appearance: Clear to straw liquid
Density [25°C]: 0.8478
Refractive Index [25°C]: 1.4190 [25°C]
Purity: 96% by GC


SiSiB® PC5904 can be used as a surface modifier to generate hydrophobicity (e.g. on concrete, glass, inorganic pigments, or mineral fillers).

When diluted with an appropriate solvent, it can be used in the formulation of water repellent products. Upon proper application, the formulated product will penetrate and provide water repellency by chemically reacting with the cementitious substrate. Treated substrates are hydrophobic and retain their original appearance.


Net weight 170Kg steel drum, for more details, please visit Packing Centre.

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