Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Group | Substance | IARC Group | Year of classifcation |
| Polycyclic hydrocarbons | Benz[a]anthracene | 2A | 1987 |
| Benzo[a]pyrene | 1 | 2012 | |
| Aldehydes | Formaldehyde | 1 | 2012 |
| Acetaldehyde | 2B | 1999 | |
| Aromatics | Benzene | 1 | 2012 |
| Inorganic toxins | Arsenic | 1 | 2012 |
| Beryllium | 1 | 2012 | |
| Nickel | 2B | 2012 | |
| Cobalt | 2B | 1991 | |
| Lead (inorganic) | 2B | 1987 | |
IARC = International Agency for Research on Cancer
