| CAS
NO. |
2627-95-4, 846574-60-5 |
|
| EINECS
NO. |
220-099-6 |
| FORMULA |
[H2C=CHSi(CH3)2]2O |
| MOL
WT. |
186.40 |
| H.S.
CODE |
2931.00.9010 |
|
UN NO.
|
1993 |
| TOXICITY |
Oral Rat: LD50: >10 gm/kg |
| SYNONYMS |
Bisvinyltetramethyldisiloxane;
Divinyltetramethyldisiloxane; |
|
sym-Tetramethyldivinyldisiloxane;
1,1'-Divinyltetramethyldisiloxane; 1,1,3,3-Tetramethyl-1,3-divinyldisiloxane;
1,3-Diethenyl-1,1,3,3-tetramethyl disiloxane; 1,3-Divinyl-1,1,3,3-tetramethyl
disiloxane; 1,3-Divinyltetramethyldisiloxane; |
|
SMILES |
C=C[Si](O[Si](C=C)(C)C)(C)C |
|
CLASSIFICATION
|
Siloxane, Silicone Monomer |
|
EXTRA
NOTES
|
Potential
vinyl donor in cross-coupling reactions.
|
|
PHYSICAL AND CHEMICAL PROPERTIES
|
| PHYSICAL
STATE |
Clear
liquid
|
| MELTING POINT |
- 99 C |
| BOILING
POINT |
139 C |
| SPECIFIC GRAVITY |
1.07 |
| SOLUBILITY
IN WATER |
Insoluble
|
| SOLVENT
SOLUBILITY |
|
| pH |
|
| VAPOR DENSITY |
0.813 |
| log Pow |
5.47 (Octanol-water) |
| OH RATE
CONSTANT |
5.32E-11 (cm3/molecule-sec
at 25 C Atmospheric ) |
|
AUTOIGNITION
|
|
|
NFPA
RATINGS
|
|
|
REFRACTIVE
INDEX
|
1.411
- 1.413 |
|
FLASH
POINT
|
24
C
|
| STABILITY |
Stable
under ordinary conditions. |
|
EXTERNAL LINKS
& GENERAL
DESCRIPTION
|
|
Wikipedia
Linking
Material
Safety Data Sheet
Google
Scholar Search
http://pubs.acs.org/
Step-growth copolymerization of
aromatic ketones and 1,3-divinyltetramethyldisiloxane is found to be catalyzed
by (Ph3P)3RuH2CO. Polymerization occurs by the
anti-Markovnikov addition of the C-H bonds, which are ortho to the
carbonyl group of the aromatic ketone, across the C-C double bonds of
1,3-divinyltetramethyldisiloxane. Prior activation of the catalyst by treatment
with a stoichiometric amount of styrene results in formation of ethylbenzene and
higher molecular weight copolymers. The scope and current mechanistic
understanding of this copolymerization reaction are considered.
|
| SALES
SPECIFICATION |
|
APPEARANCE
|
Clear liquid
|
| PURITY |
96.0%
min
|
| TRANSPORTATION |
| PACKING |
|
| HAZARD CLASS |
3
(Packing Group: II) |
| UN
NO. |
1993 |
| SAFETY
INFORMATION |
|
Hazard
Symbols:F, XI, Risk Phrases: 11-36/37/38,
Safety Phrases: 16-26-36 |
|
PRICE
INFORMATION |
|
|