Acetaldehyde is a colorless and volatile compound with a pungent odor that is commonly found in various substances. This organic chemical compound is also known as ethanal, acetic aldehyde, and systematic name ethanone. It is often used in the production of chemicals, perfumes, solvents, and resins and is considered a hazardous substance. Other synonyms for acetaldehyde include ethyl aldehyde, acetic aldehyde, aldehyde C2, and ethanimine. These terms are often used interchangeably to describe the same chemical compound. Understanding the different synonyms for acetaldehyde is essential for chemists, researchers, and professionals working in industries that use this substance.