HIGH-PURITY ACETONITRILE AND PURIFICATION OF CRUDE ACETONITRILE

摘要

High-purity acetonitrile which has less absorptions in the ultraviolet region of the wavelengths of 200-400 nm and is useable as a module-phase solvent in liquid chromatography, in particular, high-performance liquid chromatography. A simplified method of purifying crude acetonitrile either by bringing crude acetonitrile into contact with nascent oxygen and then with at least one compound selected from among basic substances and adsorbents, optionally followed by the separation and removal of low-boiling and high-boiling compounds, or by bringing crude acetonitrile into contact with nascent oxygen, separating and removing low-boiling and high-boiling compounds, and bringing the acetonitrile thus treated into contact with at least one compound selected from among basic substances and adsorbents.