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QUESTION

# Draw the structural formula of methanal?

Of "methanal", i.e. "formaldehyde"?

O=CH_2. This has appreciable water solubility (approx. 40*g*L^-1) and such are known as "formalin", which is widely used to preserve tissue in the undertaking caper.

"Formaldehyde" has a normal boiling point of -19 ""^@C. It is a quite unpleasant gas to get a whiff of.