Silane | Silanes | Alkyl & Alkoxy Silanes

SiSiB® PC5221

Synonym: Dimethoxydimethylsilane

Countertype of DowCorning Z-6194, ShinEtsu KBM-22, Wacker M2-DIMETHOXY

Chemical Structure


SiSiB® PC5221 is a monomeric alkylalkoxysilane. It hydrolyzes in contact with water, releasing methanol, to form highly reactive silanols, which further condense to form oligomeric and polymeric siloxanes.

Typical Physical Properties

Chemical Name: Dimethyldimethoxysilane
CAS No.: 1112-39-6
EINECS No.: 214-189-4
Empirical Formula: C4H12O2Si
Molecular Weight: 120.22
Boiling Point: 82°C [760mmHg]
Flash Point: -8°C
Color and Appearance: Colorless clear liquid
Density [25°C]: 0.865
Refractive Index [25°C]: 1.3708 [25°C]
Purity: 98.5% by GC


SiSiB® PC5221 is used for the synthesis of chemical intermediates.
SiSiB® PC5221 is used as an additive for the production of silicone resins.
SiSiB® PC5221 is used for hydrophobization of surfaces, like glass, pigments etc.


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

Technical Library

Download Technical Data Sheet Safety Data Sheet 中文


Download SiSiB® SILANES & SILICONES 2014
Guide SiSiB® SILANE Selection Guide Guide SiSiB® SILANE Cross Reference Guide