2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
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2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
structure -
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CAS No:
2554-06-5
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Formula:
C12H24O4Si4
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Chemical Name:
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
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Synonyms:
s-tetramethyltetravinylcyclotetrasiloxane;Tetravinyltetramethylcyclotetrasiloxane;tetravinyl-tetramethylcyclo-tetrasiloxane;2,4,6,8-TETRAMETHYLTETRAVINYLCYCLOTETRASILOXANE;1,3,5,7-TETRAVINYLTETRAMETHYLCYCLOTETRASILOXANE;2,4,6,8-TETRAMETHYL2,4,6,8-TETRAVINYLCYCLO-TETRASILOXANE 99%;2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane;Vinylmethylcyclosiloxane
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CAS No:
Description
Colorless transparent liquid
Liquid
In the presence of a Pd catalyst, this reagent cross-couples with aryl bromides to give styrene derivatives.
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.]
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane Basic Attributes
344.66
344.66
1807272
219-863-1
3NT606T1VK
TSCA listed
DTXSID3038808
Colorless to Almost colorless
29319090
Characteristics
36.9
bp 224–224.5 °C.
3.25520
Liquid
0.997 g/mL at 25 °C(lit.)
−44 °C (dec.)(lit.)
111-112 °C10 mm Hg(lit.)
210 °F
n20/D1.435
7μg/L at 23℃
2-8°C
93.5Pa at 25℃
Non flammable
Keep in dark place,Sealed in dry,Room Temperature
Safety Information
NONH for all modes of transport
1
Xi
26-36
GZ4550000
Xi
P305 + P351 + P338
Low toxicity by ingestion and inhalation.
|Warning|H315 (18.18%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 172 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane Use and Manufacturing
Adhesives and sealant chemicals
Adhesives and sealants
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.
Adhesive manufacturing|Cyclotetrasiloxane, 2,4,6,8-tetraethenyl-2,4,6,8-tetramethyl-: ACTIVE|Cyclotetrasiloxane, tetraethenyltetramethyl-: ACTIVE
Computed Properties
Molecular Weight:344.66
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:4
Exact Mass:344.07516538
Monoisotopic Mass:344.07516538
Topological Polar Surface Area:36.9
Heavy Atom Count:20
Complexity:341
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
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