Refined from coking crude phenol, it is a colorless needle crystal or white crystal frit, when exposed to air or sunlight it will be oxidized and the color gradually turns to pink and red. Phenol is mainly used to produce phenolic resin, caprolactam, bisphenol A, adipic acid, aniline, alkylphenol, salicylic acid,etc. and also used as solvents, reagents and disinfectants, it has a wide range of applications in synthetic fibers, synthetic rubber, plastics, medicine, pesticides, spices, dyes and coatings.