ISO Certificate Divinyltetramethyldisiloxane (VMM) CAS No. 2627-95-4

• CAS No.: 2627-95-4
• Formula: C8h18osi2
• EINECS: 220-099-6
• Grade: Siloxane
• Function: Siloxane
• Certification: MSDS
• Model NO.: km-395
• Raw Material: Siloxane
• Transport Machine: 200kg/Iron Drum
• Specific Gravity: 0.811
• Water Solubility: Insoluble
• Hydrolytic Sensitivity: No Significant Reaction with Aqueous Systems
• Flash Point: 76′f
• Boiling Point: 139 ′c (Lit.)
• Melting Point: -99′c (Lit.)
• Transport Package: 200kg/Iron Drum
• Specification: 99% min.
• Trademark: KMW
• Origin: China
• HS Code: 3910000000
• Production Capacity: 20mt/Month

Product Description

Divinyltetramethyldisiloxane CAS No.2627-95-4

Tetramethyldivinyldisiloxane . 
Synonym: Divinyltetramethyldisiloxane 
1,1,3,3-Tetramethyl-1,3-divinyldisiloxane

Typical Physical Properties

Chemical Name:	Tetramethyldivinyldisiloxane VMM, ViMM
CAS No.:	2627-95-4
EINECS No.:	220-099-6
Empirical Formula:	C 8 H 18 OSi 2
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:	99.0%min  & 99.5%min

Applications

It  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  with 100 parts of the Base polymer containing the platinum catalyst.

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