Formaldehyde (/ fɔːrˈmældɪhaɪd / ⓘ for-MAL-di-hide, US also / fər -/ ⓘ fər-) (systematic name methanal) is an organic compound with the chemical formula CH2O and structure H2C=O. …

Jul 7, 2025 · Formaldehyde is a chemical used widely by industry to manufacture building materials and numerous household products. It is also a by-product of combustion and certain …

Oct 14, 2025 · Formaldehyde is toxic to humans, causing respiratory side effects and increasing the risk of certain cancers. Learn when exposure may be dangerous.

A fact sheet that discusses formaldehyde and its possible association with cancer. Includes resources for more information.

When you breathe air containing formaldehyde, most of the formaldehyde is quickly broken down in the cells lining your respiratory tract and breathed out. Only at high levels does …

Dec 12, 2025 · Formaldehyde, an organic compound, the simplest of the aldehydes, used in large amounts in various chemical manufacturing processes.

Apr 8, 2025 · Formaldehyde, present in many household products, is generally not harmful in small amounts but can cause irritation of the skin, eyes, nose and throat, especially in …