Propionaldehyde is a chemical compound that is commonly used in the manufacturing of various commercial products. There are several synonyms for propionaldehyde, including propanal, propionic aldehyde, and methylacetaldehyde. These terms are often used interchangeably in scientific literature and industry publications. Propionaldehyde is a highly flammable and colorless liquid with a pungent odor. It is used in the manufacture of plastics, rubber, and pharmaceuticals. Propionaldehyde is also used as a solvent and in the production of fragrances and flavors. It can also be found in natural sources such as fruits, meats, and dairy products. Despite its varied uses, prolonged exposure to propionaldehyde can cause irritation and respiratory problems.