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Isobutylene oxide

Product Name Isobutylene oxide

CAS558-30-5

MFC4H8O

MW72.11

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  • Mass

    MS-NW-1577          
    2,2-dimethyloxirane
    C4H8O               (Mass of molecular ion:     72)
    

       Source Temperature: 250 °C
       Sample Temperature: 170 °C
       Reservoir, 75 eV
    

          14.0       1.4
          15.0       5.0
          18.0       2.8
          26.0       4.0
          27.0      35.7
          28.0       3.1
          29.0      15.2
          31.0       6.7
          37.0       2.3
          38.0       4.1
          39.0      25.8
          40.0      17.4
          41.0     100.0
          42.0      77.4
          43.0      48.9
          44.0       2.9
          45.0       1.9
          53.0       1.2
          55.0       1.1
          57.0       8.3
          71.0       1.3
          72.0      49.6
          73.0       2.4
    

90 MHz in CDCl3

parameter in CCl4 or CDCl3


  • 1H NMR 89.56 MHz
    C4 H8 O 0.04 ml : 0.5 ml CDCl3
    2,2-dimethyloxirane
    ChemicalStructure
        Assign.     Shift(ppm)
    A 2.606 B 1.336

         Hz     ppm     Int.
    

        233.50   2.608    272
        119.69   1.337   1000
    


  • 1H NMR 300 MHz
    C4 H8 O 10 % in CCl4 or CDCl3
    2,2-dimethyloxirane
    ChemicalStructure
        Parameter     ppm  Hz
    D(A) 2.42 D(B) 1.26 ALLEN,G. ET AL. J.CHEM.SOC. 1965, 810

         Hz     ppm     Int.
    

        726.00   2.420    333
        378.00   1.260   1000
    

in CDCl3



CCl4 solution



liquid film