Acetaldehyde

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Acetaldehyde, volatile, colorless, liquid, with a pungent, fruity odor. It is important as an intermediate in the manufacture of many chemicals, pharmaceuticals, and plastics, including acetic acid, butyl alcohol, chloral, and pyridine. Acetaldehyde is miscible (mixable) in all proportions with water and most common organic solvents and is manufactured by the oxidation of ethylene, by the oxidation of ethyl alcohol, or by the combination of water with acetylene. Acetaldehyde melts at -123.5° C (-190.3° F), boils at 20.8° C (69.4° F), and has a density of 0.778 g per ml at 20° C (68° F).

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