Methyl Ethyl Ketone (MEK) is a fast-evaporating industrial solvent widely used in paints, coatings, adhesives, printing inks, and chemical manufacturing. It is a clear, colorless liquid with strong solvency power, making it effective for cleaning, degreasing, and dissolving resins and polymers. MEK is highly flammable and should be handled with appropriate safety precautions and ventilation.