HHS Updates Carcinogens List

Four chemicals are added to the official US catalog of potential cancer-causing substances.

Written byMolly Sharlach
| 2 min read

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FLICKR, CGP GREY

The National Toxicology Program of the US Department of Health and Human Services (HHS) released its 13th Report on Carcinogens (RoC) yesterday (October 2). Three new listings and a reclassified one bring the total number of known or anticipated carcinogens to 243. The report, produced by congressional mandate since 1980, is meant to inform the public and provide a framework for agencies that regulate chemical exposure.

Based on evidence that they cause tumors in rodents, the program classified 1-bromopropane, cumene, and pentachlorophenol as “reasonably anticipated” to be human carcinogens, while ortho-toluidine was reclassified as a known carcinogen.

Found in cleaning solutions and spray adhesives, 1-bromopropane is a colorless or pale yellow liquid. Studies have shown that inhalation of 1-bromopropane causes tumors in the skin, lungs, ...

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