Formaldehyde (/ f ɔːr ˈ m æ l d ɪ h aɪ d / ⓘ for-MAL-di-hide, US also / f ə r-/ ⓘ fər-) (systematic name methanal) is an organic compound with the chemical formula CH 2 O and structure H−CHO, more precisely H 2 C=O.The compound is a pungent, colourless gas that polymerises spontaneously into paraformaldehyde.It is stored as aqueous solutions (formalin), which …

2024年9月11日 · 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 processes.

Formaldehyde is a colorless, flammable gas at room temperature.� It has a pungent, distinct odor and may cause a burning sensation to the eyes, nose, and lungs at high concentrations.� Formaldehyde is also known as methanal, methylene oxide, oxymethylene, methylaldehyde, and oxomethane.� Formaldehyde can react with many other chemicals, and it will break down …

Formaldehyde, solutions (formalin) (corrosive) appears as a colorless liquid with a pungent irritating odor. Contains 37-50% formaldehyde by mass and varying amounts of methanol, added to prevent precipitation of formaldehyde polymers (formaldehyde exists in solution as CH2(OH)2 and its polymers HO(CH2O)xH where x averages about three).Formalin free of methanol is …

2025年1月16日 · 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 vapour-phase oxidation of methanol and is commonly sold as formalin, a 37 percent aqueous solution.Formalin may be dehydrated to trioxane, a crystalline trimer, or to an …

Formaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products. It is used in pressed-wood products, such as particleboard, plywood, and fiberboard; glues and adhesives; permanent-press fabrics; paper product coatings; and certain insulation materials.

Formaldehyde is a nearly colorless gas with a pungent, irritating odor even at very low concentrations (below 1 ppm). Its vapors are flammable and explosive. Because the pure gas tends to polymerize, it is commonly used and stored in solution. Formalin, the aqueous solution of formaldehyde (30% to 50% formaldehyde), typically contains up to 15% methanol as a stabilizer.

2022年5月18日 · The fact sheets summarize the information on occurrence and health effects of the chemicals covered.

2024年10月10日 · Formaldehyde is a colorless, flammable, strong-smelling chemical widely used to make home building products. 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 particleboard, furniture, paneling, cabinets, and other products.

Learn about formaldehyde, which can raise your risk of myeloid leukemia and rare cancers of or near the nasal cavity. Formaldehyde is used in pressed-wood building materials, fungicides, germicides, disinfectants, and certain preservatives. Other sources include tobacco smoke and …