1. Used as solvent for cellulose acetate, acrylic resin, alkyd resin, paint, ink, etc., binder for dyes, dewaxing agent for lubricating oil, vulcanization accelerator, etc.

2. Used as a reagent for the determination of cadmium, copper and mercury, a standard material for chromatographic analysis and a solvent for semiconductor lithography

3. GB 2760-96 specifies the permitted edible spices. Mainly used for the preparation of cheese, coffee and banana-type flavors. Can also be used as extraction solvent.

4. Mainly used as a solvent, such as for lubricating oil dewaxing, coating industry and various resin solvents, vegetable oil extraction process and azeotropic distillation in refining process, its advantages are strong solubility, lower volatility than acetone, it belongs to Medium boiling point ketone solvent. Butanone is also an intermediate for the preparation of medicines, dyes, detergents, fragrances, antioxidants and some catalysts, synthesis of anti-peeling agent methyl ethyl ketoxime, polymerization catalyst methyl ethyl ketone peroxide, corrosion inhibitor A Pentynol, etc., are used in the electronics industry as a developer after photolithography of integrated circuits.

5. It is the raw material for the preparation of the acaricide pyrimidine.