"Four new substances have been added to a list of chemicals that may cause cancer compiled by the U.S. Department of Health and Human Services (HHS).

The list of known carcinogens now includes a chemical called ortho-toluidine, which is used to make rubber chemicals, pesticides and dyes. Recent research has linked the substance to bladder cancer in people.

Three other substances were added to a list of agents that are "reasonably anticipated to be human carcinogens." These include a cleaning solvent called 1-bromopropane, a wood preservative mixture known as pentachlorophenol and cumene, which can be found in fuel products and even tobacco smoke. "

Megan Gannon reports for LiveScience October 2, 2014. [2]

SEE ALSO:

"New Edition of Report on Carcinogens Available" (National Toxicology Program) [3]