| No. | Component | N Company | C Company |
| 1 | Naphthalene, % | 99.4 | 99.6 |
| 2 | Thianaphthene, % | 0.5 | 0.3 |
| 3 | Phenol, ppm | 5.0 | 1.0 |
| 4 | Indole, ppm | 9.0 | 48.0 |
| 5 | Quinoline, ppm | Nil. | 23.0 |
| 6 | Iso-quinoline, ppm | Nil. | 20.0 |
| 7 | Indene, ppm | Nil. | 8.0 |
| 8 | β-MN, ppm | Nil. | 2.0 |
| 9 | Unknows, ppm | 9.0 | 6.0 |