Silane | Silanes | Alkyl & Alkoxy Silanes

SiSiB® PC5221

Synonym: Dimethoxydimethylsilane

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

Chemical Structure


SiSiB® organosilanes basic structure is RnSi(OR)4-n, wherein "R" is an alkyl, aryl, or other organofunctional group and "OR" is a methoxy, ethoxy, or acetoxy group. 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: 98.0% 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 210L steel drum or 1000L IBC container, for more details, please visit Packing Centre.

Technical Library

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