| No. |
Peak's Wave length |
Indication |
| 1- |
1335 cm-1 |
C=C |
| 2- |
1797 cm-1 |
C-F stretching |
| 3- |
1007 cm-1 |
mono substitution of sulfonic acid |
| 4- |
1034 cm-1 |
di substitution of sulfonic acid |
| 5- |
Expanding of 1034
to 1007 cm-1 |
maximum sulfonation |
| 6- |
1040–910 cm−1 |
asymmetric stretching vibrations of the P–OH group of phosphoric acid |
| 7- |
1150 cm−1 |
corresponds to P O stretching |
