So, when you consider that diesel exhaust is composed of a bunch of different known carcinogens, it should come as no surprise that the scientific and medical fields have finally deemed diesel exhaust a carcinogen.
| Table 1 | ||
| Toxic Substances Identified in Diesel and Gasoline Engine Exhaust | ||
| and Their Respective IARC Carcinogenic Classifications | ||
| Agent Name | CAS No. | Classification (Group) |
| Metals | ||
| Antimony compounds (Trioxide) | 1309-64-4 | Group 2B |
| Arsenic and inorganic arsenic compounds | 007440-38-2 | Group 1 |
| Beryllium and beryllium compounds | 007440-41-7 | Group 1 |
| Cadmium and cadmium compounds | 007440-43-9 | Group 1 |
| Chromium (VI) | 018540-29-9 | Group 1 |
| Cobalt and cobalt compounds | 007440-48-4 | Group 2B |
| Lead compounds | Inorganic | Group 2B |
| Nickel (Metallic) | Group 2B | |
| Nickel Compounds | Group 1 | |
| Organic Chemicals | ||
| 1,3-Butadiene | 106-99-0 | Group 1 |
| Acetaldehyde | 75-07-0 | Group 2B |
| Benzene | 71-43-2 1 | Group 1 |
| Bis(ethylhexyl)phthalate | 117-81-7 | Group 2B |
| Ethylbenzene | 100-41-4 | Group 2B |
| Formaldehyde | 50-00-0 | Group 1 |
| Propylene oxide | 75-56-9 | Group 2B |
| Halogenated and Other Chemicals | ||
| Dioxin/Dibenzofurans | 1746-01-6 (TCDD)* | Group 1 |
| Polycyclic aromatic hydrocarbons (PAHs) | ||
| Benz[a]anthracene | 56-55-3 | Group 2B |
| Benzo[b]fluoranthene | 205-99-2 | Group 2B |
| Benzo[k]fluoranthene | 207-08-9 | Group 2B |
| Benzo[a]pyrene | 5-32-8 | Group 1 |
| Chrysene | 218-01-9 | Group 2B |
| Dibenz[a,h]anthracene | 53-70-3 | Group 2A |
| 3,7-Dinitrofluoranthene | 105735-71-5 | Group 2B |
| 3,9-Dinitrofluoranthene | 22506-53-2 | Group 2B |
| 1,3-Dinitropyrene | 75321-20-9 | Group 2B |
| 1,6-Dinitropyrene | 42397-64-8 | Group 2B |
| 1,8-Dinitropyrene | 42397-64-9 | Group 2B |
| Indeno[1,2,3-cd]pyrene | 193-39-5 | Group 2B |
| Naphthalene | 91-20-3 | Group 2B |
| Nitroarenes | ||
| 3-Nitrobenzanthrone | 17 117-34-9 | Group 2B |
| 6-Nitrochrysene | 7496-02-8 | Group 2A |
| 2-Nitrofluorene | 607-57-8 | Group 2B |
| 1-Nitropyrene | 5522-43-0 | Group 2A |
| 4-Nitropyrene | 57835-92-4 | Group 2B |
| Styrene | 100-42-5 | Group 2B |
| *TCDD (2,3,7,8-tetrachlorodibenzo-para-dioxin); Table 2 adapted from Table 1.2 in IARC Monograph 105, 2014 |
