1,4,5,8-Naphthalenetetracarboxylic dianhydride

Mass

MS-NW-6779          
1,4,5,8-naphthalenetetracarboxylic 1,8:4,5-dianhydride
C14H4O6             (Mass of molecular ion:    268)

   Source Temperature: 180 °C
   Sample Temperature: 180 °C
   Direct, 75 eV

      18.0       1.4
      28.0       1.7
      37.0       3.7
      38.0       2.4
      41.0       1.5
      43.0       1.8
      44.0       1.0
      45.0       1.1
      49.0       3.2
      50.0       4.6
      53.0       2.4
      55.0       1.8
      57.0       1.1
      60.0       1.9
      60.5       1.1
      61.0      16.4
      61.5       6.1
      62.0      28.3
      62.5       2.2
      63.0       1.7
      73.0       4.6
      74.0      47.7
      75.0       4.1
      76.0      10.0
      76.5       1.5
      77.0       2.6
      84.0       2.2
      85.0       6.9
      86.0       9.6
      87.0       1.8
      90.0       4.6
      97.0       2.9
      98.0      26.8
      99.0       3.0
     109.0       1.4
     110.0       2.2
     111.0       2.1
     112.0       2.6
     120.0       1.8
     121.0       4.0
     122.0      17.0
     123.0      10.2
     124.0      63.8
     125.0       7.5
     140.0       1.5
     152.0      64.3
     153.0       8.5
     180.0      47.6
     181.0       6.7
     196.0       1.6
     224.0     100.0
     225.0      14.9
     226.0       2.2
     241.0       2.0
     268.0      25.4
     269.0       4.2

Parameter ppm Hz D(A) 8.713

     Hz     ppm     Int.

   2613.90   8.713   1000