The product can be used to make a-pyrrolidone, N-methyl-2-pyrrolidone and polyvinyl-pyrrolidone. It's also an ideal antioxidant, plasticizer, extractant, absorbent, dispersant, color fixing agent and coagulant. In medical and pharmaceutical industry, It can be used as an anaesthetic and pacifer, can be used to synthesize Ciprofloxacin and interferons and is the intermediate of vitamine and cyclopropylamine. In agricultural and forestry fields, it also has wide uses and is the intermediate of plant growth promoter and pesticides. Besides, it can be used in the making of bateries and electric wares and the color formation of color roll films. Properties: colorless transparent oily liquid with the odor of acetone, Boiling point 204°C, r-Butyrolactone is low toxic solvent with narcotism, irritating to the skin and easy to be absorbed by. It can be miscible with water, ethanol and acetone, carbon tetrachloride, miscible in thermal decomposition, Lye fragrant smell.

Properties: colorless transparent liquid , Melting point 24.6°C, insoluble in petroleum ether but soluble in water, alcohol, chloroform, benzene, ethyl acetate and carbon disulfide.

Safety properties: This is an organic toxic product, No. of risk classes:84092. It is an important chemical material, widely being used in making pharmaceuticals, textiles, dyes, coating and cosmetics, such as Pharmacy, nylon-4, PVP, artificial blood plasma etc.

It is superior quality solvent, widely used in petrochemical, pesticide,pharmaceuticals, electrolic materials,etc.Such as acetylene concentration, syn gas desulphurization, lubricant refining and antifreezes, olefins extractant, solvent of unsolvable engineering plastic, herbicide, insulator, integrated circuit making, recovery of PVC trail gas, purification agent, dye additive, disperasnt, etc.

Properties: colorless transparent liquid , Boiling point 204°C, Flash point 91°C

Safety properties:The product is feeble toxic, allowable limit concentration in air is 100 ppm.