One of the main tasks of tar distillation is to cut the naphthalene-containing fraction for further separation and refining. refining. In the process of tar distillation, according to the different fraction cutting process systems, the naphthalene enriched fractions are  Naphthalene oil fraction, naphthalene washed mixed fraction and phenol naphthalene washed triple mixed fraction, etc. Technical […]

Naphthol is chemically similar to phenol and can also undergo electrophilic substitution of the aromatic ring and reaction of the phenolic hydroxyl group. Naphthol differs from phenol in that its hydroxyl group can be substituted with an amino group to form naphthylamine. Naphthol can be coupled with diazonium salts, which is the basis of azo […]

Aniline, also known as aminobenzene, with molecular formula C6H7N, is a colorless oily liquid, decomposed by heating to 370℃. Slightly soluble in water, easily soluble in ethanol, ether and other organic solvents. Aniline is one of the most important amine substances. It is mainly used in the manufacture of dyes, drugs, resins, and also used […]