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Octamethylcyclotetrasiloxane

Product Name Octamethylcyclotetrasiloxane

CAS556-67-2

MFC8H24O4Si4

MW296.62

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  • Mass 

    MS-IW-1345          
octamethylcyclotetrasiloxane
C8H24O4Si4          (Mass of molecular ion:    296)


       Source Temperature: 240 °C
   Sample Temperature: 150 °C
   Reservoir, 75 eV


         133.0       1.7
     191.0       2.7
     193.0       1.8
     205.0       1.4
     207.0       2.8
     249.0       5.8
     250.0       1.6
     251.0       2.2
     265.0      11.3
     266.0       3.1
     267.0       2.6
     281.0     100.0
     282.0      28.4
     283.0      18.0
     284.0       3.7
     285.0       1.1

in CDCl3

parameter in CDCl3




  • 1H NMR 300 MHz
    C8 H24 O4 Si4 0.05 ml : 0.5 ml CDCl3
    octamethylcyclotetrasiloxane
    ChemicalStructure 
        Parameter     ppm  Hz
    
      D(A)         0.091
     
     J(A,Si-29) = 3.6 Hz.
  

         Hz     ppm     Int.


         27.30   0.091   1000

in CDCl3



CCl4 solution



liquid film





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