Chemicals are generally divided into pharmaceutical intermediates and APIs in the pharmaceutical industry. Pharmaceutical intermediates are actually some chemical raw materials or chemical products used in the process of drug synthesis, advanced intermediate products used in the synthesis of chemical drugs, and "semi-finished products" in the process of chemical drug synthesis.

The application of chemical materials in agriculture is mainly in the aspects of fertilization and pest control. The most common is the fertilizer used in the growth of crops, the use of these fertilizers can increase crop yields.

In industrial production, the application of chemical industry is roughly divided into technical application, energy saving and consumption reduction application and environmental protection application. Technical application mainly refers to the application of chemical technology for industrial production; energy saving and consumption reduction mainly refers to reducing energy consumption in production through chemical application; environmental protection application mainly uses chemical principles to treat industrial waste gas and wastewater. There are also some applications such as inks, cured coatings, efficient hindered amine light stabilizers, etc.

The use of chemical raw materials in textile & dyeing includes textile auxiliaries (such as antistatic agents, glazing agents, bleaching auxiliaries, etc.); printing and dyeing auxiliaries (such as emulsifiers, penetrants, wetting agents, leveling agents, dispersing agent, reducing agent, color fixing agent, optical brightener, etc.); fabric finishing agent (eg, softener, stiffener, waterproofing agent, flame retardant, antistatic agent, etc.).

Personal care products refer to daily chemicals that are spread on various parts of the human body by rubbing, spraying or other similar methods to achieve cleaning, eliminating bad odor, maintenance, beauty and modification purposes. The common classification of personal care products can be divided into hair care, body care, facial care, oral care and make-up by function. In addition to personal care products, household chemicals also include household care products such as laundry detergents, laundry detergents, cleaners, and more.

In the process of food processing, in order to improve the quality of food, increase some nutrients, and prolong the shelf life, some chemical substances are generally added artificially as auxiliary materials in food, which are called food additives.