The International Agency for Research and Cancer confirms formaldehyde is a human carcinogen in the top cancer risk category, Group 1. In 2007, Hazards magazine criticised the UK Health and Safety Executive (HSE) for its continuing “inaction” on this and other known cancer risks.

IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. Formaldehyde, 2-Butoxyethanol and 1-tert-Butoxy-2-propanol, volume 88, December 2006.