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2554-06-5

Basic Information
CAS No.: 2554-06-5
Name: 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
Article Data: 9
Molecular Structure:
Molecular Structure of 2554-06-5 (2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane)
Formula: C12H24O4Si4
Molecular Weight: 344.662
Synonyms: Cyclotetrasiloxane,2,4,6,8-tetramethyl-2,4,6,8-tetravinyl- (6CI,7CI,8CI);1,3,5,7-Tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane;1,3,5,7-Tetramethyltetravinylcyclotetrasiloxane;1,3,5,7-Tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane;1,3,5,7-Tetravinyltetramethylcyclotetrasiloxane;2,4,6,8-Tetraethenyl-2,4,6,8-tetramethylcyclotetrasiloxane;2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane;LS 8670;PS 925;SIT7900;VMC;s-Tetramethyltetravinylcyclotetrasiloxane;
EINECS: 219-863-1
Density: 0.967 g/cm3
Melting Point: -44 °C
Boiling Point: 247.805 °C at 760 mmHg
Flash Point: 94.338 °C
Solubility: insoluble in water
Appearance: Colorless transparent liquid
Hazard Symbols: IrritantXi
Risk Codes: 36
Safety: 26-36
PSA: 36.92000
LogP: 3.25520
Synthetic route
75-77-4

chloro-trimethyl-silane

124-70-9

Dichloromethylvinylsilane

A

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

B

3901-77-7

1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane

C

16522-66-0

1,1,1,3,5,7,7,7-octamethyl-3,5-divinyltetrasiloxane

D

16545-47-4

1,1,1,3,5,7,9,9,9-nonamethyl-3,5,7-trivinylpentasiloxane

Conditions
ConditionsYield
With water In toluene at 20℃; for 27h; Further byproducts given;A n/a
B n/a
C 26%
D 10 % Chromat.
With water In toluene at 20℃; for 27h; Further byproducts given;A n/a
B n/a
C 26 % Chromat.
D 10%
75-77-4

chloro-trimethyl-silane

124-70-9

Dichloromethylvinylsilane

A

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

B

3901-77-7

1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane

C

16522-66-0

1,1,1,3,5,7,7,7-octamethyl-3,5-divinyltetrasiloxane

D

34372-23-1

C18H42O5Si6

Conditions
ConditionsYield
With water In toluene at 20℃; for 27h; Further byproducts given;A n/a
B n/a
C 26%
D 6 % Chromat.
124-70-9

Dichloromethylvinylsilane

A

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

B

3901-77-7

1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane

Conditions
ConditionsYield
With water In toluene at 20℃; for 27h;A 24%
B 19 % Chromat.
With water In toluene at 20℃; for 27h;A 26 % Chromat.
B 12%
124-70-9

Dichloromethylvinylsilane

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

Conditions
ConditionsYield
With ethanol
75-77-4

chloro-trimethyl-silane

124-70-9

Dichloromethylvinylsilane

A

5356-85-4

methylbis(trimethylsilyloxy)vinylsilane

B

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

C

3901-77-7

1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane

D

16522-66-0

1,1,1,3,5,7,7,7-octamethyl-3,5-divinyltetrasiloxane

Conditions
ConditionsYield
With water In toluene at 20℃; for 27h; Further byproducts given. Yields of byproduct given;A 31 % Chromat.
B n/a
C n/a
D n/a
124-70-9

Dichloromethylvinylsilane

A

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

B

17704-22-2

2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane

C

18304-82-0

2,4,6,8,10,12-hexamethyl-2,4,6,8,10,12-hexavinyl-cyclohexasiloxane

D

3901-77-7

1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane

Conditions
ConditionsYield
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Further byproducts given. Yields of byproduct given;
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Yields of byproduct given;
124-70-9

Dichloromethylvinylsilane

A

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

B

17704-22-2

2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane

C

3901-77-7

1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane

Conditions
ConditionsYield
With tetrahydrofuran; lithium at 35 - 45℃; Product distribution; Mechanism;
With tetrahydrofuran; lithium at 35 - 45℃; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
124-70-9

Dichloromethylvinylsilane

A

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

B

18304-82-0

2,4,6,8,10,12-hexamethyl-2,4,6,8,10,12-hexavinyl-cyclohexasiloxane

C

3901-77-7

1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane

D

17704-23-3

2,4,6,8,10,12,14-Heptamethyl-2,4,6,8,10,12,14-heptavinyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasila-cyclotetradecane

Conditions
ConditionsYield
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Further byproducts given. Yields of byproduct given;
5507-44-8

methylvinyldiethoxysilane

A

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

B

2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinyl-cyclopentasiloxane, 2,4,6,8,10,12-hexamethyl-2,4,6,8,10,12-hexavinyl-cyclohexasiloxane

2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinyl-cyclopentasiloxane, 2,4,6,8,10,12-hexamethyl-2,4,6,8,10,12-hexavinyl-cyclohexasiloxane

Conditions
ConditionsYield
With hydrogenchloride
124-70-9

Dichloromethylvinylsilane

107-51-7

Octamethyltrisiloxane

A

107-46-0

Hexamethyldisiloxane

B

2554-06-5

2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane

C

16545-47-4

1,1,1,3,5,7,9,9,9-nonamethyl-3,5,7-trivinylpentasiloxane

D

1,1,1,3,5,5,7,7,9,9,9-undecamethyl-3-vinylpentasiloxane

Conditions
ConditionsYield
With dimethyl sulfoxide Heating; Further byproducts given. Title compound not separated from byproducts;
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    Product Name: 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane MF: C12H24O4Si4 MW: 344.66 EINECS: 219-863-1 Mol File: 2554-06-5.mol 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane Structure 2,4,6,8-Tetravinyl-2,4,6,

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Specification

The 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane, with the CAS registry number 2554-06-5, is also known as 1,3,5,7-Tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane. It belongs to the product categories of Si (Classes of Silicon Compounds); Siloxanes; Si-O Compounds; Silicone Monomers Organometallic Reagents; Monomers; Organosilicon. Its EINECS number is 219-863-1. This chemical's molecular formula is C12H24O4Si4 and molecular weight is 344.66. What's more, its systematic name is 2,4,6,8-Tetramethyl-2,4,6,8-tetravinyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane. Its classification code is Mutation data. This chemical should be sealed and stored in a cool and dry place. 

Physical properties of 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane are: (1)#H bond acceptors: 4; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 4; (4)Polar Surface Area: 36.92 Å2; (5)Index of Refraction: 1.455; (6)Molar Refractivity: 96.626 cm3; (7)Molar Volume: 356.389 cm3; (8)Polarizability: 38.305×10-24cm3; (9)Surface Tension: 20.6 dyne/cm; (10)Density: 0.967 g/cm3; (11)Flash Point: 94.338 °C; (12)Enthalpy of Vaporization: 46.535 kJ/mol; (13)Boiling Point: 247.805 °C at 760 mmHg; (14)Vapour Pressure: 0.04 mmHg at 25°C.

Preparation: this chemical can be prepared by dichloro-methyl-vinyl-silane at the temperature of 20 °C. This reaction will need reagent H2O and solvent toluene with the reaction time of 27 hours. The yield is about 24%.

2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane can be prepared by dichloro-methyl-vinyl-silane at the temperature of 20 °C

Uses of 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane: it can be used to produce 4-vinyl-benzoic acid ethyl ester at the temperature of 20 °C. It will need reagent TBAF and solvent tetrahydrofuran with the reaction time of 10 min. This reaction will also need catalyst Pd(dba)2. The yield is about 85%.

2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane can be used to produce 4-vinyl-benzoic acid ethyl ester at the temperature of 20 °C

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing.

You can still convert the following datas into molecular structure:
(1)SMILES: O1[Si](O[Si](O[Si](O[Si]1(\C=C)C)(\C=C)C)(\C=C)C)(\C=C)C
(2)Std. InChI: 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
(3)Std. InChIKey: VMAWODUEPLAHOE-UHFFFAOYSA-N

The toxicity data is as follows:  

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LC inhalation > 1320mg/m3/4H (1320mg/m3)   National Technical Information Service. Vol. OTS0572745.
rat LD50 oral > 15gm/kg (15000mg/kg)   National Technical Information Service. Vol. OTS0572732.