CAS：145224-94-8|The Application of MES·H2O in the Metallurgical

Manganese is one of the basic raw materials in the steel industry. It can increase the strength, hardness, and ductility of steel and is an indispensable alloying element in steel production. However, due to the low chemical potential and high activity of manganese metal, it is easy to react with oxygen in the air and cause corrosion of manganese metal. Manganese corrosion not only shortens the service life of manganese mechanical equipment, damages the electronic and optical properties of metal materials, but also causes catastrophic accidents. Therefore, passivation is necessary to improve the corrosion resistance of manganese.
CN107740087B patent has developed a chromium free passivation agent for manganese metal and its preparation method and application. The chromium free passivation agent for manganese metal includes linear hydrophobic fatty acid, linear fatty acid methyl ester sulfonate, soluble cerium salt and 2-morpholineethanesulfonic acid compounds.
Among them, the 2-morpholine ethanesulfonic acid compound is selected from at least one of 2-morpholine ethanesulfonic acid, 2-morpholine ethanesulfonic acid semi sodium salt, 2-morpholine ethanesulfonic acid sodium salt, 2-morpholine ethanesulfonic acid potassium salt, and 2-morpholine ethanesulfonic acid monohydrate (CAS: 145224-94-8). The buffering pH of 2-morpholine ethanesulfonic acid compounds is 5.5~6.7, which has a certain pH buffering ability, ensuring the stability of the passivation solution. The weak acid environment effectively slows down the hydrolysis of cerium salts.
2-(N-morpholine) ethanesulfonic acid monohydrate, also known as 2-(N-morpholine) ethanesulfonic acid monohydrate, abbreviated as MES·H2O in English, with CAS 145224-94-8, is an organic compound with molecular formula C6H15NO5S and molecular weight 213.25. MES·H2O (CAS: 145224-94-8) is a biological buffer widely used in laboratory research and development and chemical and pharmaceutical synthesis. YACOO can provide customers with high-quality services of MES·H2O from gram to ton.

Reference
CN107740087B A metal manganese chromium free passivation agent and its preparation method and application