Tetramethyldivinyldisiloxane | CAS 2627-95-4 | Siloxane | Cyclosiloxane | SiSiB SILANES

Siloxanes | Cyclosiloxanes | Organosiloxanes | Cyclic Siloxanes

SiSiB® PC9401

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.

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