Monoethanolamine (MEA) is an organic compound with colorless liquid. It is used to remove acid gas in natural gas and petroleum gas, and manufacture ...
A preparation process of paracetamol are as follows:
(1) Add acetic acid, p-aminophenol, and metallic zinc with a molar ratio of 1.296:0.275:0.0046 i...
Cosmetic zinc oxide can meet certain usage requirements during use, but during the production process, it must strictly follow the operating regulatio...
