Phenol (chemical formula: C6H5OH, PhOH), also known as carbolic acid, hydroxybenzene, is the simplest phenolic organic substance, a colorless crystal at room temperature. Toxic. Phenol is a common chemical and is an important raw material for the production of certain resins, fungicides, preservatives, and drugs such as aspirin.

Four roles and uses of phenol
1. used in the oilfield industry, is also an important organic chemical raw material, with it can be made phenolic resin, caprolactam, bisphenol A, salicylic acid, picric acid, pentachlorophenol, phenolphthalein, a person  acetyl ethoxyaniline and other chemical products and intermediates, in chemical raw materials, alkyl phenols, synthetic fibers, plastics, synthetic rubber, pharmaceuticals, pesticides, spices, dyes, coatings and oil refining industry It has wide application in chemical raw materials, alkyl phenols, synthetic fibers, plastics, synthetic rubber, pharmaceuticals, pesticides, spices, dyes, coatings and oil refining industries.

2. Used as analytical reagent, such as solvent and organic modifier for liquid chromatography, reagent for photometric determination of ammonia and thin-layer determination of carbohydrates. It is also used as antiseptic and disinfectant, and used in organic synthesis. Widely used in plastics, dyes, pharmaceuticals, synthetic rubber, spices, coatings, oil refining, synthetic fibers and other industries.

3. Used as antioxidant for fluoroborate tin plating and tin alloy, also used as other electroplating additives.

4. Used in the production of phenolic resin, bisphenol A, caprolactam, aniline, alkyl phenol, etc. In the petroleum refining industry, it is used as a selective extraction solvent for lubricating oil, and also used in the plastic and pharmaceutical industries.