This eighty-eighth volume of IARC Monographs evaluates the available
evidence on the carcinogenic potential in humans of formaldehyde,
2-butoxyethanol and 1-tert-butoxypropan-2-ol. Formaldehyde, a potential
carcinogen that is found in the workplace and in the environment, has
been studied the most widely and has been evaluated three times
previously. It is being re-evaluated this time following a
recommendation from an Advisory group that identified formaldehyde as a
high priority for future re-evaluation, based on the availability of
complex mechanistic data and the anticipated publication of new
epidemiological studies that became available soon afterwards. The same
Advisory Group also identified 2-butoxyethanol and other glycol ethers
as high priorities, based on the availability of new carcinogenesis
bioassays conducted by the US National Toxicology Program. This is the
first evaluation that IARC has made to the two-glycol ethers.