SiSiB® PC5130, SiSiB® PC5220 and SiSiB® PC5310 are formed by reaction of metallic silicon or ferrosilicon with hydrogen chloride or chlorine. SiSiB® PC5220 is a colorless clear liquid.
Color and Appearance
Colorless clear liquid
Methyl chlorosilanes have one to three methyl groups. In the case of SiSiB® PC5220 dimethyldichlorosilane, dichlorodimethylsilane, two chlorine atoms are available, so that a reaction with excess water produces a linear chain of ether-like linkages between silicon atoms.
As in polyethers, these flexible linkages produce a rubbery polymer, polydimethylsiloxane (PDMS). Trimethylchlorosilane (SiSiB® PC5310) can be used to induce branching and cross-linking in PDMS molecules, while chlorotrimethylsilane serves to end backbone chains, limiting molecular weight.
SiSiB® PC5220 organofunctional silanes are supplied in 200Kg steel drum.
In the unopened original container SiSiB® PC5220 dimethyldichlorosilane has a shelf life of one year in a dry and cool place.