PROPYL ALCOHOL

also called propanol either of two isomeric alcohols used as solvents and as intermediates in chemical manufacturing. Normal (n-)propyl alcohol (molecular formula CH3CH2CH2OH), or 1-propanol, is a by-product of the synthesis of methyl alcohol from carbon monoxide and hydrogen. It occurs in fusel oil. It easily forms esters and ethers, some of commercial importance. It is used especially in the preparation of lacquers. Isopropyl alcohol (CH3)2CHOH, or 2-propanol, is manufactured from propylene by treatment with sulfuric acid, followed by hydrolysis and distillation. Isopropyl alcohol is easily oxidized to acetone, of which it is a major industrial source. Besides being used as rubbing alcohol, a solvent, and a chemical intermediate, isopropyl alcohol serves as a de-icing and anti-stall agent in liquid fuels. Both propyl alcohol isomers are colourless, flammable, fragrant liquids miscible with water in all proportions and somewhat toxic.