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**Systematic name:** Ethanoic acid
**Molecular formula:** C₂H₄O₂
**Chemical formula (condensed):** CH₃COOH
**Molar mass:** 60,05 g/mol
**Information:** Acetic acid is a colourless, corrosive and sharp smelling liquid.
**Use:** It is the most important carboxylic acid in the chemical industry. It serves as a solvent and acetylation agent. It forms vinegar when 5-8 % is concentrated in aqueous solution.