Maleic anhydride, also known as maleic anhydride (MAH), or maleic anhydride for short, is an anhydride of maleic acid, a colorless or white solid with an acidic odor at room temperature and the molecular formula C4H2O3. Earlier, maleic anhydride was prepared by catalytic oxidation of benzene, but in order to reduce production costs, the oxidation […]

Dichloromethane is an organic substance with the molecular formula CH2Cl2, a colorless transparent liquid with an irritating odor similar to that of ether. Slightly soluble in water and soluble in ethanol and ether, it is a non-combustible low boiling solvent under usual conditions of use, and its vapor becomes highly concentrated in hot air before […]

Naphthalene refining rate is the ratio of the amount of naphthalene in the naphthalene refining product to the amount of naphthalene in the raw material, expressed as a percentage. It is one of the indicators to evaluate the naphthalene oil fraction processing and naphthalene refining process and operation level. In addition to naphthalene, technical naphthalene […]