Tetramethyldivinyldisiloxane .
Synonym: Divinyltetramethyldisiloxane
1,1,3,3-Tetramethyl-1,3-divinyldisiloxane
Countertype of Degussa CD 6210
Chemical Structure
Introduction
SiSiB® PC9401 is a high purity 1,3-Divinyl Tetramethyl Disiloxane, it is a colorless to yellowish clear liquid.
Typical Physical Properties
| Chemical Name: | Tetramethyldivinyldisiloxane |
| CAS No.: | 2627-95-4 |
| EINECS No.: | 220-099-6 |
| Empirical Formula: | C8H18OSi2 |
| Molecular Weight: | 186.40 |
| Boiling Point: | 139°C [760mmHg] |
| Flash Point: | 19°C |
| Color and Appearance: | Colorless or yellowish transparent liquid |
| Density [25°C]: | 0.811 |
| Refractive Index [25°C]: | 1.412[25°C] |
| Purity: | Min.99.9% (Grade A) Min.99.5% (Grade B) Min.99.0% (Grade C) |
Applications
SiSiB® PC9401 is used as a linear inhibitor in the formulating of two-part Silicone RTV-2 Addition Curing systems.
Because of the large vinyl content, small amounts are very effective in retarding and controlling the working time or pot life of two-part Addition-Curing Silicone RTVs.
Also, due to its boiling point of 139ºC, it is easily volatilized during curing. A suggested starting formulation is to use 0.25 to 0.50 parts by weight of SiSiB® PC9401 with 100 parts of the Base polymer containing the platinum catalyst.
Packings
Net weight 160Kg steel drum, for more details, please visit Packing Centre.