Octamethylcyclotetrasiloxane
Product Name Octamethylcyclotetrasiloxane
CAS556-67-2
MFC8H24O4Si4
MW296.62
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MassMS-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
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1H NMR 300 MHz C8 H24 O4 Si4 0.05 ml : 0.5 ml CDCl3 octamethylcyclotetrasiloxane 
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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