Formaldehyde - CH₂O

Formaldehyde is a colourless gas with a characteristic, pungent smell. The gas is easily dissolved in water. Formaldehyde has the chemical formula CH₂O and the structural formula of Formaldehyde is CH₂=O. 

Formaldehyde is produced through dehydrogenation of methanol in gaseous phase over a solid catalyst (silver or copper).

Properties

Molecular weight   30.03 g/mol

Solid phase   Melting point: -92 °C

Liquid phase   Boiling point: -19 °C