Squaric acid

Mass

MS-NW-5804          
3,4-dihydroxy-3-cyclobutene-1,2-dione
C4H2O4              (Mass of molecular ion:    114)

   Source Temperature: 220 °C
   Sample Temperature: 170 °C
   Direct, 75 eV

      12.0       5.0
      13.0       2.3
      17.0       1.5
      18.0       5.5
      24.0       2.9
      28.0      35.3
      29.0      86.4
      30.0       2.1
      40.0       8.9
      41.0      10.2
      44.0       2.7
      52.0       1.6
      56.0       6.5
      58.0     100.0
      59.0       2.5
      68.0       9.7
      69.0       7.6
      86.0      51.5
      87.0       2.0
     114.0      93.7
     115.0       4.9
     116.0       1.0