Morpholine, also known as 1,4-oxazacyclohexane and diethyleneimine oxide, is a colorless alkaline oily liquid with an ammonia odor and hygroscopicity. It can volatilize with water vapor, is miscible with water, and is soluble in organic solvents such as acetone, benzene, ether, pentane, methanol, ethanol, carbon tetrachloride, and propylene glycol. The vapor forms an explosive mixture with air, and the explosion limit is 1.8% to 15.2% (volume fraction). Morpholine is a secondary amine and also has the properties of inorganic and organic acids, and can generate salts and amides. Morpholine contains secondary amine groups and has all the typical reaction characteristics of secondary amine groups. It reacts with inorganic acids to generate salts, and reacts with organic acids to generate salts or amides. It can undergo alkylation reactions, and can also react with ethylene oxide, ketones, or undergo Willgerodt reactions. Due to its unique chemical properties, morpholine has become one of the fine petrochemical products with important commercial uses. It can be used to prepare rubber vulcanization accelerators such as NOBS, DTOSChemicalbook and MDS, rust inhibitors, corrosion inhibitors, cleaners, descaling agents, analgesics, local anesthetics, sedatives, respiratory system and vascular stimulants, surfactants, optical bleaching agents, fruit preservatives, textile printing and dyeing auxiliaries, etc. It has a wide range of uses in rubber, medicine, pesticides, dyes, coatings and other industries. In medicine, it is used to produce a variety of important drugs such as morpholine guanidine, viroline, ibuprofen, kebiben, naproxen, dichloroaniline, sodium phenylacetate, etc. Acrylic morpholine, a new polymer monomer that has developed rapidly in recent years abroad, is also worth noting. Acrylic morpholine is obtained by the reaction of acrylic acid ester and morpholine. The product is a water-soluble monomer and is also water-soluble after polymerization, so it is used for the modification of water-based polymers; in addition, it is also widely used as a reactive diluent for ultraviolet curing resins; with the continuous deepening of application research, many new specific uses are constantly being developed, making it a very rapidly developing polymer monomer.