Urethane production method: nitric acid reacts with urea to form urea nitrate, then ethanol and sodium nitrite are added, and esterification reaction is carried out in the presence of sulfuric acid to form urethane and sodium nitrate. The reaction product is filtered to remove sodium nitrate, and then distilled. Crystallize, dry, and obtain the finished product. Raw material consumption quota: nitric acid (96%) 1230kg / t, urea 116kg / t, ethanol 330kg / t, sodium nitrite 1370kg / t.
Use of Urethane: Used as an intermediate for medicines, pesticides and perfumes, for the production of sleeping pills and sedatives. It is used as an antidote for strychnine and resorcinol, as a fungicide, as a cosolvent for injections, and as a coloring agent for printing and dyeing industries. It can also be used in biochemical research. In addition, Urethane itself can be used as a medicine and has anti-cancer properties for the treatment of multiple myeloma and chronic leukemia.
Urethane production method and use
