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. The …

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 other natural …

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 formaldehyde enter your …

Sep 10, 2025 · Most formaldehyde produced in the United States is for the manufacture of resins, such as urea-formaldehyde, used to make the adhesives for pressed wood products, such as …

Oct 17, 2025 · formaldehyde (HCHO), an organic compound, the simplest of the aldehydes, used in large amounts in a variety of chemical manufacturing processes. It is produced principally by the …

Nov 2, 2023 · Formaldehyde is a colorless and flammable gas with a distinct odor detectable at very low concentrations. It is a volatile organic compound (VOC) that causes cancer and other harmful health …

Sep 20, 2013 · Formaldehyde is a naturally found chemical in numerous foods and is produced in small levels by the human body. People are primarily exposed to formaldehyde by breathing contaminated …

Formaldehyde is a colorless, strong-smelling chemical used in some building materials and household products. Learn about formaldehyde and cancer risk here.