1745-72-8

Basic information

• Product Name: DIVINYLDICHLOROSILANE
• Synonyms: CH2=CHSiCl2CH=CH2;Dichloro(divinyl)silane;DIVINYLDICHLOROSILANE;DICHLORODIETHENYLSILANE
• CAS NO: 1745-72-8
• Molecular Formula: C₄H₆Cl₂Si
• Molecular Weight: 153.08
• EINECS: 217-118-5
• Mol File: 1745-72-8.mol
• Article Data: 7

Chemical Properties

• Melting Point: <0°C
• Boiling Point: 118-119°C
• Flash Point: 15°C
• Appearance: /
• Density: 1,081 g/cm3
• Vapor Pressure: 21.2mmHg at 25°C
• Refractive Index: 1.4509
• CAS DataBase Reference: DIVINYLDICHLOROSILANE(CAS DataBase Reference)
• NIST Chemistry Reference: DIVINYLDICHLOROSILANE(1745-72-8)
• EPA Substance Registry System: DIVINYLDICHLOROSILANE(1745-72-8)

Safety Data

• Statements: 11-34
• Safety Statements: 9-16-26-36/37/39-45
• RIDADR: 2985
• TSCA: No
• Hazardous Substances Data: 1745-72-8(Hazardous Substances Data)

Usage

General Description

Divinyldichlorosilane is a colorless, liquid organosilicon compound with the formula SiCl2(C2H3)2. It is a highly reactive chemical involved in the production of silicon-containing polymers and resins. As it can be hazardous, it requires careful handling; prolonged or repeated exposure could lead to harmful effects like skin and eye irritations, damaging the respiratory system, or causing burns. It’s mostly known for its use in laboratories and industrial applications, particularly in chemistry and materials science where it functions as a precursor to silicone polymers.

InChI:InChI=1/C4H6Cl2Si/c1-3-7(5,6)4-2/h3-4H,1-2H2

Upstream product

• 75-01-4 chloroethylene 
• 1719-53-5 diethyldichlorosilane 
• 75-94-5 trichlorovinylsilane 
• 1826-67-1 vinyl magnesium bromide 
• 3536-96-7 vinylmagnesium chloride 
• 1871-21-2 chlorotrivinylsilane 
• 7791-25-5 sulfuryl dichloride 
• 94-36-0 dibenzoyl peroxide 
• 7440-21-3 silicon 
• 127410-30-4 bis(diethylamino)divinylsilane 
• 25202-05-5 (chloromethyl)trivinylsilane 
• 1112-55-6 tetravinylsilane 

Downstream Products

• 119901-88-1 Diallyldivinyl silane 
• 7787-89-5 (n-pr-2-Cl)SiCl₃ 
• 75-94-5 trichlorovinylsilane 
• 18142-56-8 divinylsilane 
• 197172-17-1 di-phenylethynyl-divinylsilane 
• 1228317-27-8 (CCC₆H₄CH₃)2Si(CHCH₂)2 
• 17937-68-7 diphenyl-divinyl-silane 
• 1577213-57-0 bis(2,4,6-trimethoxyphenyl)divinylsilane 
• 605686-32-6 chloro-bis-(4-trifluoromethyl-phenyl)-vinyl-silane 
• 920743-67-5 divinylbis[4-(trifluoromethyl)phenyl]silane 
• 920743-66-4 divinylbis(pentafluorophenyl)silane 

Relevant articles and documents

Silaheterocyclen. VI. Erzeugung und -Cycloadditionsreaktionen von 1-Vinyl-1-chlor-2-neopentylsilaethen

Vi2SiCl2 (3) reacts with LiBut to give 1-vinyl-1-chloro-2-neopentylsilaethene (2), which in the absence of suitable partners cyclodimerizes to 1,3-divinyl-1,3-dichloro-2,4-dineopentyl-1,3-disilacyclobutane (6).With C5H6, C5Me5H or anthracene 2 is trapped by formation of the cycloadducts, which in a similar reaction with LiBut yield the "norbornene-, pentamethylnorbornene"- and"dibenzo-2-silabicyclooctanesilaethenes" (30, 35 and 36) respectively.These undergo reactions with dienes affording and/or cycloadducts.The observed products and their distribution are best explained by assuming the silaethenes 30, 35 and 36, respectively together with their α-lithio precursors as reactive intermediates.Probably because of steric hindrance 30 and 36 do not dimerize to 1,3-disilacyclobutane derivatives.

MONOFLUORINATION OF SOME DIHYDROSILANES

The heterogeneous fluorination of diethylsilane, ethylvinylsilane and divinylsilane with SbF5 was studied by measuring the yields of the fluorinated products as a function of reaction time.As the reactions proceed, the monoflorinated species (two of them are new compounds) exhibit maxima in their percentage yields with respect to time. the proton NMR and IR spectra of the three silanes and their six fluorinated products are reported.

TRIVINYLCHLOROSILANE IN THE ORGANOMAGNESIUM SYNTHESIS OF HEXAORGANODISILANES

-