Used as a buffer in high-performance liquid chromatography (HPLC) for the separation of biological molecules like peptides and nucleotides due to its volatility and compatibility with mass spectrometry. Commonly employed in molecular biology for DNA and RNA precipitation, helping to remove salts and other impurities during nucleic acid purification. Serves as an ion-pairing agent in analytical chemistry, improving the separation of polar compounds in reversed-phase chromatography. Used in the textile industry as a mordant and dyeing assistant, facilitating even dye distribution on fabrics. Acts as a catalyst or reagent in organic synthesis, particularly in acetylation reactions and the preparation of acetate esters. Found in some food products as a acidity regulator and preservative, contributing to pH control and shelf-life extension.