Details:

Product  Description：

Product Name:	2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
CAS:	2554-06-5
MF:	C12H24O4Si4
MW:	344.66
EINECS:	219-863-1
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

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.

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.

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Company Profile：

 

Wuhan Han Sheng New Material Technology Co. Ltd is a professional company which specialized in manufacturing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents.

We have long term cooperation pharmaceutical raw material production plant and a reagent research and development center, with a rich professional background and strong competitive advantage. We have a professional and experienced team and we promise clients to provide the best quality, price and service. During the business cooperation with clients, we always adhere principle of Honesty, Trustworthiness and win-win policy. We guarantee 100% qualification of our products pass through the standard of USA, Mexico, UK, Australia, Canada, Brazil, France, Germany, Spain, Belgium, Sweden, the Netherlands and so on.

 

 

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

Exhibitions:

 

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

Products & Packaging：

 

Our products are used for pharmaceuticals, pesticides, synthetic dyes, organic chemicals, inorganic chemicals, coatings, spices and essence, cosmetics and toilet products, soaps and synthetic detergents, surfactants, printing inks and their auxiliaries, adhesives, photosensitive materials, magnetic materials, catalysts, reagents, water treatment agents and polymer flocculants, papermaking auxiliaries, leather auxiliaries, synthetic materials auxiliaries, textile printing and dyeing agents and finishing agents, food additives Feed additives, animal drugs, etc.

 

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

About  Us 

 

 

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

Shipment & Payment：

 

*small quantity: By Fedex, DHL, HKPOST, UPS, TNT or As customers’ requirement

*Bulk order: By air or sea

*Delivery: within 3 days for samples and 10 days for bulk order

 

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

Our Markets: 

 

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

FAQ

 

1. Are you a trade company or factory

We are a factory with our own trading company.

 

2. How do you control the quality

Our factory is equipped with professional technicians to inspect the quality around production lines. The inspection test would be made every 2 hours to ensure the production conform to quality standard. We also accept BV, SGS, or any third pary inspection.

3. How long is lead time

We deliver goods within 3 days for small order, 7-10 days for bulk order.

 

4. Where is your factory located How can I visit the factory

Our factory located in Hebei, China

 

5. Can I get some samples

Yes, we can supply sample with free, but the shipping cost be paid by our customers.

 

6. How to start orders or make payments

Proforma Invoice will be issued first after confirmation of order, enclosed our bank information. Payment could be done by T/T or .

 

7. How to confirm the product quality before placing order

You can get free samples for some products. You only need to pay the shipping cost or arrange a courier to us and take the samples.

 

8. How do you treat quality complaint

First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.