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

Chemical Structure

Introduction

The word siloxane is derived from the words silicon, oxygen, and alkane. 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
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:	98% by GC

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 210L steel drum or 1000L IBC container, for more details, please visit Packing Centre.

Technical Library

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