| CAS: | 2554-06-5 |
| MF: | C12H24O4Si4 |
| MW: | 344.66 |
| EINECS: | 219-863-1 |
| Product Categories: | POSS IntermediatesPolymer Science;Silicone MonomersOrganometallic Reagents;Monomers;Organosilicon;POSS? Precursors and Intermediates;Silsesquioxanes: POSS? Nanohybrids;Si (Classes of Silicon Compounds);Siloxanes;Si-O Compounds |
| Mol File: | 2554-06-5.mol |
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| 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane Chemical Properties |
| 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. | Keep in dark place,Sealed in dry,Room Temperature |
| 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 |
| 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 | Cyclotetrasiloxane, 2,4,6,8-tetraethenyl-2,4,6,8-tetramethyl- (2554-06-5) |
| 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane Usage And Synthesis |
| 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. |
| Uses | 2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane is used as an intermediate in organic synthesis. It is used in the preparation of 4-vinyl-benzoic acid ethyl ester. Further, it is used to prepare styrene derivatives by cross-coupling with aryl bromide in the presence of palladium catalyst. |
| 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.] |
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Packing &shipping&Payment
Packing:25kg/drum
Shipping:by sea or by air
Payment:T/T,western union,moneygram
Packaging Details drum
Port:Tianjin
Lead Time :
| Quantity(Kilograms) | 1 - 10000 | >10000 |
| Est. Time(days) | 5 | To be negotiated |
Company information
Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in 4'-Methylacetophenone,Levamisole hydrochloride ,N-Methylformamide and other chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big customers come from Europe, America and other countries in the world, we can guarantee the quality and price. In recent decades, with the efforts of all employees, we have established many cooperative companies in shandong, henan, guangdong and other places. Our corporate purpose is based on the market, enhance the strength, take the road of scientific and environmental sustainable development, relying on the country. Technology r & d center, increase the investment in r & d, based on the domestic market, expand the international market, manufacturing quality products, sincere service to the society, into a modern, ecological, scientific and technological enterprise world.
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