| PEAK | WAVELENGTH (cm−1) | MODE OF VIBRATION | FUNCTIONAL GROUP |
| P1 | 3700 - 3600 | O - H Stretching | Free Alcohol |
| P2 | 3500 - 3400 | N - H Stretching | Primary Amine |
| P3 | 2957 - 2855 | C - H Stretching | Alkane |
| P4 | 1453 - 1430 | C - H Bending | Methyl Group |
| P5 | 915 - 912 | C = C Bending | Monosubstituted Alkane |
| P6 | 796 | C - H Bending | Substituted Benzene |
| P7 | 537 - 500 | C - Br Stretching | Halo Compound |
| P8 | 468 - 425 | C - I Stretching | Halo Compound |