Mass

MS-NW-8264          
1,2,3,4-butanetetracarboxylic acid
C8H10O8             (Mass of molecular ion:    234)

   Source Temperature: 190 °C
   Sample Temperature: 170 °C
   Direct, 75 eV

      14.0       1.9
      15.0       2.9
      16.0       1.0
      17.0      12.1
      18.0      54.4
      19.0       1.1
      26.0      12.3
      27.0      62.7
      28.0      22.5
      29.0      34.7
      30.0       1.2
      31.0       3.6
      37.0       2.0
      38.0       5.1
      39.0      48.4
      40.0       5.8
      41.0      24.7
      42.0      33.4
      43.0      53.1
      44.0      12.5
      45.0      36.5
      46.0       1.5
      49.0       1.6
      50.0       6.3
      51.0       9.9
      52.0       7.6
      53.0      35.0
      54.0     100.0
      55.0      92.2
      56.0      14.9
      57.0      48.3
      58.0      12.6
      60.0       9.4
      61.0       1.0
      67.0       2.0
      68.0       2.4
      69.0      11.2
      70.0      13.5
      71.0       7.1
      72.0       6.4
      73.0       7.6
      79.0       1.2
      80.0      10.7
      81.0      19.7
      82.0      12.0
      83.0       3.8
      84.0      25.6
      85.0      48.1
      86.0       2.7
      95.0       2.1
      96.0       1.1
      97.0      10.8
      98.0      51.2
      99.0      18.7
     100.0      28.2
     101.0       2.8
     102.0       1.4
     108.0      76.0
     109.0       6.1
     110.0       2.0
     111.0       1.3
     112.0      48.7
     113.0      15.3
     114.0       1.1
     116.0       4.3
     117.0       2.7
     124.0       1.5
     125.0       7.0
     126.0      87.6
     127.0       9.2
     128.0       1.3
     138.0       1.1
     139.0       3.2
     144.0      25.0
     145.0       1.7
     152.0      10.8
     153.0       6.6
     154.0      21.0
     155.0       1.8
     156.0       1.3
     170.0       9.0
     171.0       1.3
     172.0       1.0
     181.0       3.8
     198.0       1.5
     199.0       8.2
     217.0       2.8