Terephthalic acid

Mass

MS-NW-6840          
terephthalic acid
C8H6O4              (Mass of molecular ion:    166)

   Source Temperature: 220 °C
   Sample Temperature: 150 °C
   Direct, 75 eV

      18.0       2.7
      27.0       2.3
      28.0       2.1
      37.0       3.7
      37.5       1.1
      38.0       5.4
      39.0      12.5
      45.0       7.3
      49.0       2.0
      50.0      20.0
      51.0      13.7
      52.0       3.3
      53.0       4.0
      55.0       1.1
      61.0       1.1
      62.0       1.3
      63.0       2.4
      64.0       1.4
      65.0      41.9
      66.0       3.3
      73.0       2.8
      74.0      12.2
      75.0      11.6
      76.0      10.7
      77.0       7.6
      93.0       5.3
     103.0       3.5
     104.0       3.4
     105.0       2.9
     120.0       1.6
     121.0      33.1
     122.0       2.8
     138.0       2.8
     148.0       1.2
     149.0     100.0
     150.0       9.2
     151.0       1.1
     166.0      86.6
     167.0       8.0
     168.0       1.2