Definition

1. Noun:
   • A colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals: "Ethanoic acid" is the systematic IUPAC name for the organic acid commonly known as acetic acid. It is a weak acid characterized by its sharp, vinegar-like smell and is a key industrial chemical and biological metabolite.

Usage Examples

• Noun:
  • The laboratory procedure requires pure ethanoic acid.
  • Vinegar contains approximately 5% ethanoic acid.
  • The production of the polymer involves ethanoic acid as a precursor.

Advanced Usage

• In chemical nomenclature: "Ethanoic acid" is the formal name used in scientific contexts to precisely identify the two-carbon carboxylic acid (CH₃COOH).

  • The compound was identified by spectroscopy as ethanoic acid.

• In industrial contexts: Refers to the concentrated, glacial form of the acid used as a solvent and reagent.

  • The plant specializes in the production of glacial ethanoic acid.

Variants and Related Words

• Acetic acid (n): The common name for ethanoic acid.

  • Acetic acid is the main component of vinegar.

• Acetate (n): A salt or ester of ethanoic acid.

  • Sodium acetate is a common buffer in chemistry.

• Carboxylic acid (n): The broader class of organic compounds to which ethanoic acid belongs.

  • Ethanoic acid is a simple example of a carboxylic acid.

Synonyms

• Acetic acid: The most common synonym, especially in commercial and biological contexts.

Related Phrases / Compound Terms

• Glacial ethanoic acid: Refers to the pure, water-free form of the acid which solidifies into ice-like crystals at cool temperatures.

  • The reaction must be carried out in glacial ethanoic acid.

• Ethanoic anhydride (n): An important derivative formed from two molecules of ethanoic acid, used in acetylation reactions.

  • Ethanoic anhydride is used in the synthesis of aspirin.

Noun

1. a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals