The major use is as a solvent, particularly for various coating systems, such as vinyl, adhesives, nitrocellulose, and acrylic coatings; for paint removers, lacquers, varnishes, spray paints, sealers, glues, magnetic tapes, printing inks, resins, rosins, cleaning solutions, and polymerization. Used in dewaxing lubricating oils, degreasing of metals, in the production of synthetic leathers, transparent paper and aluminum foil, and as a chemical intermediate and catalyst. Extraction solvent in the processing of foodstuffs and food ingredients. MEK is found in some fruits and vegetables and occurs naturally in blood, urine and exhaled air, probably as a minor product of normal metabolism.