allyylialkoholi

allyylialkoholi (allyl alcohol) is a simple alkenyl alcohol with the molecular formula C3H6O and the IUPAC name 2-propen-1-ol. It is a clear, colorless liquid that is mildly soluble in water and miscible with most organic solvents. The substance is a volatile, flammable liquid with a characteristic faint pungent odor. It has a boiling point of 39.5 °C and a density of 0.833 g cm³ at 20 °C. In its pure form, allyl alcohol readily polymerises under acidic conditions, forming polystyrene-like polymers.

The most common industrial preparation of allyl alcohol involves the hydrolysis of allyl chloride or the reduction of allyl aldehyde using hydrogen gas in the presence of catalyst. A laboratory route frequently used is the Wittig reaction, where the ylide reacts with formaldehyde to produce the target alcohol. In some synthetic applications, the Rosenmund–von Braun reaction provides a convenient pathway from allyl iodide or bromide through intermediate oxime formation.

Allyl alcohol serves as a versatile building block in organic synthesis. It is used as a precursor for the synthesis of acrylates, acylals, and other functionalized molecules. In polymer chemistry, it is a monomer in the production of certain epoxy resins and in the creation of specialized lubricants. The compound also finds use in fragrance manufacture and as a solvent additive for specific industrial processes.

Handling allyl alcohol requires adherence to safety protocols. The material is corrosive to eyes and skin and can cause irritation. It is a strong irritant and may be harmful if inhaled or ingested. The substance is classified as a hazardous material under shipping regulations, requiring proper containment, labeling, and usage in well-ventilated areas or under engineered fume hoods. Protective equipment such as gloves and eye protection is recommended during use.