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2,5-Dihydroxybenzoic acid

Product Name 2,5-Dihydroxybenzoic acid

CAS490-79-9

MFC7H6O4

MW154.12

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  • Mass

    MS-NW-0197          
    2,5-dihydroxybenzoic acid
    C7H6O4              (Mass of molecular ion:    154)
    

       Source Temperature: 200 °C
       Sample Temperature:   0 °C
       Direct, 75 eV
    

          26.0       4.0
          27.0       6.0
          29.0       2.9
          37.0       1.2
          38.0       1.5
          39.0       2.7
          45.0       2.5
          49.0       1.0
          50.0       4.4
          51.0       8.5
          52.0      26.6
          53.0      15.6
          54.0       7.6
          55.0       4.0
          61.0       1.6
          62.0       2.4
          63.0       3.2
          69.0       2.7
          77.0       1.0
          79.0       5.5
          80.0      28.3
          81.0       5.4
          82.0       9.7
         107.0       3.3
         108.0      30.6
         109.0       3.6
         135.0       3.8
         136.0     100.0
         137.0       9.8
         138.0       1.2
         154.0      38.1
         155.0       3.1
    

90 MHz in D2O

90 MHz in DMSO-d6


  • 1H NMR 89.56 MHz
    C7 H6 O4 0.045 g : 0.5 ml D2O
    2,5-dihydroxybenzoic acid
    ChemicalStructure
        Assign.     Shift(ppm)
    A 7.19 B 7.00 C 6.82 THE SOLVENT SIGNAL REMOVED.

         Hz     ppm     Int.
    

        645.94   7.213    539
        643.00   7.180    809
        634.63   7.087    421
        631.75   7.054    191
        625.75   6.987    797
        622.75   6.954    654
        613.19   6.847   1000
        604.31   6.748    417
    


  • 1H NMR 89.56 MHz
    C7 H6 O4 0.047 g : 0.5 ml DMSO-d6
    2,5-dihydroxybenzoic acid
    ChemicalStructure
        Assign.     Shift(ppm)
    A 10.6 B 7.209 C 6.988 D 6.829 HSP-04-875 : D2O

         Hz     ppm     Int.
    

        647.62   7.232    564
        647.11   7.226    598
        644.71   7.199    815
        644.20   7.193    743
        633.61   7.075    395
        630.62   7.042    208
        627.80   7.010     59
        624.80   6.977    851
        621.81   6.943    726
        618.48   6.906     64
        614.29   6.859   1000
        613.78   6.854    963
        605.49   6.761    377
        604.98   6.756    356
    

in D2O



KBr disc



nujol mull



4880 A,200 M,powder