The chemical name for HCH3CO2 is Acetic Acid.
Acetic acid is a simple carboxylic acid that has the chemical formula CH3COOH. It is best known for giving vinegar its sour taste and pungent smell. In its pure form, acetic acid is a colorless liquid with a characteristic pungent odor. It is widely used in the food industry as a preservative and flavoring agent as well as in the chemical industry for the production of various chemicals.