5356-85-4

Basic information

• Product Name: VINYLMETHYLBIS(TRIMETHYLSILOXY)SILANE
• Synonyms: Heptamethyl-3-vinyltrisiloxane;VINYLMETHYLBIS(TRIMETHYLSILOXY)SILANE;VINYLMETHYLBIS-(TRIMETHYLSILYLOXY)-SILAN;VINYLMETHYLBIS(TRIMETHYLSILYLOXY)SILANE;METHYLBIS(TRIMETHYLSILYLOXY)VINYLSILANE;[BIS-(TRIMETHYLSILYLOXY)-METHYLSILYL]-ETHEN;1,1,1,3,5,5,5-HEPTAMETHYLVINYLTRISILOXANE;3-VINYL HEPTAMETHYL TRISILOXANE
• CAS NO: 5356-85-4
• Molecular Formula: C₉H₂₄O₂Si₃
• Molecular Weight: 248.54
• Product Categories: monomer;Acyclic;Alkenes;Organic Building Blocks
• Mol File: 5356-85-4.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 48 °C8.8 mm Hg(lit.)
• Flash Point: 124 °F
• Appearance: clear colorless liquid
• Density: 0.864 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.564mmHg at 25°C
• Refractive Index: n20/D 1.397(lit.)
• Storage Temp.: Flammables area
• CAS DataBase Reference: VINYLMETHYLBIS(TRIMETHYLSILOXY)SILANE(CAS DataBase Reference)
• NIST Chemistry Reference: VINYLMETHYLBIS(TRIMETHYLSILOXY)SILANE(5356-85-4)
• EPA Substance Registry System: VINYLMETHYLBIS(TRIMETHYLSILOXY)SILANE(5356-85-4)

Safety Data

• Hazard Codes: Xi
• Statements: 10-36/37/38
• Safety Statements: 16-26-36
• RIDADR: UN 1993 3/PG 3
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 5356-85-4(Hazardous Substances Data)

Usage

Chemical Properties

clear colorless liquid

InChI:InChI=1/C9H24O2Si3/c1-9-14(8,10-12(2,3)4)11-13(5,6)7/h9H,1H2,2-8H3

Upstream product

• 75-77-4 chloro-trimethyl-silane 
• 124-70-9 Dichloromethylvinylsilane 
• 107-51-7 octamethyltrisiloxabe 
• 107-46-0 Hexamethyldisiloxane 
• 67-68-5 dimethyl sulfoxide 

Downstream Products

• 31576-68-8 3-styrylheptamethyltrisiloxane 
• 1161856-24-1 C₁₆H₃₀O₃Si₃ 
• 1161856-23-0 C₁₆H₃₀O₂Si₃ 
• 71382-90-6 P(CH₂CH₂SiCH₃(OSi(CH₃)3)2)(C₆H₅)2 
• 5926-21-6 3-(α,β-Dichlor-aethyl)-heptamethyltrisiloxan 

Relevant articles and documents

Reaction of organylchlorosilanes with dimethyl sulfoxide in the presence of octamethyltrisiloxane

Dichloro(methyl)(vinyl)silane reacts with DMSO in the presence of octamethyltrisiloxane to form cyclooligomethyl(vinyl)siloxanes(MeViSiO) n (n = 3-6). The reaction involves disproportionation of octamethyltrisiloxane into hexamethyldisiloxane and decamethyltetrasiloxane. Along with the latter two products, insertion products of methyl vinyl silanone into both permethyloligosiloxanes were identified. Alkyltrichlorosilanes RSiCl3 (R = Me, Et) react with DMSO in the presence of octamethyltrisiloxane to form cyclic oligoalkyltrichlorosiloxanes (RClSiO) m (m = 3-6).

FEATURES OF INFLUENCE OF HCl ON HYDROLYTIC COPOLYCONDENSATION OF BIFUNCTIONAL ORGANOCHLOROSILANES WITH TRIMETHYLCHLOROSILANE

The hydrogen chloride that is formed in the hydrolytic copolycondensation of R'RSiCl2 with Me3SiCl affects the composition of the reaction products only at cocentrations above 30-35percent, where it is responsible for splitting out the terminal trimethylsiloxy group.The stability of the terminal groups increases with increasing size of the substituents on the silicon atom in the R'RSiCl2.The total yield of Me3SiO(R'RSiO)mSiMe3 with m = 1-4 also increases with increasing size of the substituents on the silicon atom in the R'RSiCl2.The total yield of p with p = 3-5 increases with decreasing tendency of the R'RSiCl2 to form rings by hydrolytic polycondensation, and with increasing sensitivity of the terminal trimethylsiloxy group in the cocondensation products to the action of HCl and its activity with respect to the siloxane bond.