SiSiB® PC5220
Dimethyldichlorosilane
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.
Technical Data
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CAS No. |
75 78 5 |
|
EINECS No. |
200-901-0 |
|
Formula |
C2H6Cl2Si |
|
Molecular Weight |
|
|
Boiling Point |
70°C [760mmHg] |
|
Flash Point |
-7°C |
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Color and Appearance |
Colorless clear liquid |
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Density 25/25°C |
|
|
Refractive Index |
|
Application
Methyl chlorosilanes have one to three methyl groups. In the case of SiSiB® PC5220 dimethyldichlorosilane, dimethyl dichloro silane, 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.
Silicone Chinais ubiquitous in our lives and has been continuously improving our lives. Since our establishment as a silicone products manufacturer in 1989, silicone has been our core business, especially custom food and medical grade silicone.
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