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1,4-Bis(dimethylsilyl)benzene

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1,4-Bis(dimethylsilyl)benzene Basic information

Product Name:
1,4-Bis(dimethylsilyl)benzene
Synonyms:
  • 1,4-phenylenebis(dimethyl-silan
  • 214773
  • p-Bis(dimethysilyl)benzene
  • p-phenylenebis(dimethyl-silan
  • Silane, 1,4-phenylenebis[dimethyl-
  • Silane, p-phenylenebis(dimethyl-
  • 1,4-BIS(DIMETHYLSILYL)BENZENE
  • 1,4 BIS(DIMETHYLSILYL)BENZENE MIN
CAS:
2488-01-9
MF:
C10H18Si2
MW:
194.42
EINECS:
219-638-8
Mol File:
2488-01-9.mol
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1,4-Bis(dimethylsilyl)benzene Chemical Properties

Melting point:
115 °C
Boiling point:
213-214 °C(lit.)
Density 
0.874 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.502(lit.)
Flash point:
185 °F
storage temp. 
Inert atmosphere,Room Temperature
form 
clear liquid
color 
Colorless to Light yellow
Specific Gravity
0.872
Hydrolytic Sensitivity
3: reacts with aqueous base
BRN 
1072658
InChI
InChI=1S/C10H18Si2/c1-11(2)9-5-7-10(8-6-9)12(3)4/h5-8,11-12H,1-4H3
InChIKey
KQERVIARWMHFOS-UHFFFAOYSA-N
SMILES
C1([SiH](C)C)=CC=C([SiH](C)C)C=C1
CAS DataBase Reference
2488-01-9(CAS DataBase Reference)
NIST Chemistry Reference
1,4-Bis(dimethylsilyl)benzene(2488-01-9)
EPA Substance Registry System
Silane, 1,4-phenylenebis[dimethyl- (2488-01-9)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22
Safety Statements 
26-36/37/39-36/37-23
RIDADR 
1993
WGK Germany 
3
RTECS 
VV4830000
TSCA 
Yes
HS Code 
29319000

MSDS

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1,4-Bis(dimethylsilyl)benzene Usage And Synthesis

Synthesis

In a 1000 mL reaction flask, Put in xylene 230g, Sodium metal 47g, TDA-1 0.37g, Warm up to 100110°C, Insulation 0.5h, and Turn on stirring. After stirring for 1 hour, all the sodium was made into sodium sand, and a Sodium sand mixture was formed. After 73.5 g of p-dichlorobenzene and 100 g of xylene were mixed and dissolved, Then add 96.5g of dimethylchlorosilane Formed a mixture; the mixture was added to a constant-pressure funnel. The liquid droplets in the constant pressure funnel are added to the sodium sand mixture. Dropping about 5h to complete, the reaction was completed by keeping it at 100-110°C for 2 hours. After the reaction, Cool the reaction system to 5-15°C. Then, add 280 mL of water from the constant pressure funnel. Stirring 1h, Stand for 1h, Then separate the lower brine phase, The upper organic phase is taken as the crude 1,4-bis (dimethylsilyl) benzene. The upper organic phase is entered into the distillation flask, and the temperature in the control bottle is below 120°C. Vacuum distillation,92 g of 1,4-Bis(dimethylsilyl)benzene was obtained; the yield is 95%.

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