| Identification | More | [Name]
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane | [CAS]
2554-06-5 | [Synonyms]
1,3,5,7-TETRAVINYL-1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE
1,3,5,7-TETRAVINYLTETRAMETHYLCYCLOTETRASILOXANE
2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAVINYLCYCLOTETRASILOXANE
2,4,6,8-TETRAMETHYLTETRAVINYLCYCLOTETRASILOXANE
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
1,3,5,7-Tetramethyl-1,3,5,7-etravinylcyclotetrasiloxane
1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane
2,4,6,8-tetraethenyl-2,4,6,8-tetramethyl-cyclotetrasiloxan
2,4,6,8-tetraethenyl-2,4,6,8-tetramethylcyclotetrasiloxane
2,4,6,8-tetraethenyl-2,4,6,8-tetramethyl-Cyclotetrasiloxane
Cyclotetrasiloxane, 2,4,6,8-tetraethenyl-2,4,6,8-tetramethyl-
Cyclotetrasiloxane,2,4,6,8-tetraethenyl-2,4,6,8-tetramethyl-
s-tetramethyltetravinylcyclotetrasiloxane
Tetravinyltetramethylcyclotetrasiloxane
tetravinyl-tetramethylcyclo-tetrasiloxane
METHYLVINYLCYCLOSILOXANE
2,4,6,8-TETRAMETHYL2,4,6,8-TETRAVINYLCYCLO-TETRASILOXANE 99%
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
Vinylmethylcyclosiloxane
2,4,6,8-Tetraethenyl-2,4,6,8-tetramethylcyclooctanetetrasiloxane | [EINECS(EC#)]
219-863-1 | [Molecular Formula]
C12H32O4Si4 | [MDL Number]
MFCD00040293 | [Molecular Weight]
352.72 | [MOL File]
2554-06-5.mol |
| Questions And Answer | Back Directory | [Synthesis]
The preparation method of 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane includes: (1) adding methylvinyldichlorosilane to a low-temperature solvent system, reacting at low temperature for a period of time, and then raising it to a high-temperature condition for cyclization reaction. After the reaction is completed, the reaction solution is cooled and separated to obtain an acidic water layer and an oil layer; wherein, the solvent system includes water and surfactants; (2) adding salt solution to the oil layer for washing and sedimentation, and adjusting the pH value of the mixture to separate the hydrolysate; (3) performing vacuum distillation on the hydrolysate to obtain a fraction containing 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane. Figure: Synthesis reaction formula of 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane. |
| Chemical Properties | Back Directory | [Appearance]
Colorless transparent liquid | [Melting point ]
−44 °C (dec.)(lit.)
| [Boiling point ]
111-112 °C10 mm Hg(lit.)
| [density ]
0.997 g/mL at 25 °C(lit.)
| [vapor pressure ]
93.5Pa at 25℃ | [refractive index ]
n20/D 1.435
| [Fp ]
210 °F
| [storage temp. ]
2-8°C
| [solubility ]
Miscible with most organic solvents. | [form ]
liquid | [color ]
Colorless to Almost colorless | [Specific Gravity]
0.998 | [Water Solubility ]
7μg/L at 23℃ | [Hydrolytic Sensitivity]
4: no reaction with water under neutral conditions | [BRN ]
1807272 | [InChI]
1S/C12H24O4Si4/c1-9-17(5)13-18(6,10-2)15-20(8,12-4)16-19(7,11-3)14-17/h9-12H,1-4H2,5-8H3 | [InChIKey]
VMAWODUEPLAHOE-UHFFFAOYSA-N | [SMILES]
C[Si]1(O[Si](C)(O[Si](C)(O[Si](C)(O1)C=C)C=C)C=C)C=C | [LogP]
6.47 | [CAS DataBase Reference]
2554-06-5(CAS DataBase Reference) | [NIST Chemistry Reference]
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane(2554-06-5) | [EPA Substance Registry System]
2554-06-5(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS07 | [Signal word ]
Warning | [Hazard statements ]
H319 | [Precautionary statements ]
P305+P351+P338 | [Hazard Codes ]
Xi | [Risk Statements ]
R36:Irritating to the eyes. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [WGK Germany ]
1
| [RTECS ]
GZ4550000
| [F ]
10 | [TSCA ]
Yes | [REACH Registrations]
Active | [HS Code ]
29319090 | [Storage Class]
6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects | [Hazard Classifications]
Repr. 1B |
| Hazard Information | Back Directory | [Chemical Properties]
Colorless transparent liquid | [Physical properties]
bp 224–224.5 °C. | [Uses]
2,4,6,8-Tetraethenyl-2,4,6,8-tetramethylcyclotetrasiloxane (1) (D4V) and the trimer, 2,4,6-triethenyl-2,4,6- trimethylcyclotrisiloxane (2) (D3V) are the two commercially available cyclic polyvinylmethylsiloxanes. D4 V is used as a vinyl donor in the palladium-catalyzed vinylation of aryl halides and as a building block in polymer chemistry and dendrimer synthesis. The palladium-catalyzed vinylation of substituted aryl halides using D4 V is a general and mild method for the preparation of a variety of substituted styrenes or dienes.It is widely used as reagent for the vinylation of aryl halides and building block for
carbosilane dendrimers. | [General Description]
In the presence of a Pd catalyst, this reagent cross-couples with aryl bromides to give styrene derivatives. | [Hazard]
Low toxicity by ingestion and inhalation. | [Flammability and Explosibility]
Nonflammable | [Purification Methods]
A 7mL sample can be distilled in a small Vigreux column (p 11) at atmospheric pressure without polymerisation or decomposition. It is soluble in cyclohexane. [Kantor et al. J Am Chem Soc 77 1685 1955, Beilstein 4 IV 4184.] |
| Spectrum Detail | Back Directory | [Spectrum Detail]
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane(2554-06-5)1HNMR
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane(2554-06-5)IR
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane(2554-06-5)Raman
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane(2554-06-5)FT-IR
|
| Well-known Reagent Company Product Information | Back Directory | [Alfa Aesar]
2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane, 97%(2554-06-5) | [Sigma Aldrich]
2554-06-5(sigmaaldrich) | [TCI AMERICA]
2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane,>97.0%(GC)(2554-06-5) |
|
| Company Name: |
J & K SCIENTIFIC LTD.
|
| Telephone: |
18210857532 18210857532 |
| Website: |
https://www.jkchemical.com |
| Company Name: |
Alfa Aesar
|
| Telephone: |
400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
| Company Name: |
Energy Chemical
|
| Telephone: |
400-0056266 |
| Website: |
www.energy-chemical.com |
| Company Name: |
T&W GROUP
|
| Telephone: |
021-61551611 13296011611 |
| Website: |
www.trustwe.com/ |
|