Aniline Applications

Uses for Aniline Products

Aniline products are used to manufacture a variety of end-products, ranging from polyurethane foam to Kevlar™ aramid fiber to  pharmaceuticals.

Aniline

Aniline is primarily used in the production of methylene diphenyl isocyanate (MDI) to create rigid polyurethane foams as insulators for refrigerators, freezers, and buildings. MDI also helps create adhesives used in the construction industry, especially for producing particle board. Many chemicals can be made from aniline, including:

  • Isocyanates for the urethane industry
  • Antioxidants, activators, accelerators, and other chemicals for the rubber industry
  • Indigo, acetoacetanilide, and other dyes and pigments
  • Diphenylamine for the rubber, petroleum, plastics, agricultural, explosives, and chemical industries
  • Various fungicides and herbicides for the agricultural industry
  • Pharmaceutical, organic chemical, and other products

Safety Considerations

Persons considering the use of aniline should be aware of its hazards and take necessary steps to ensure safe handling.

Note: Aniline is sold by Chemours as a chemical intermediate for industrial use only. Unreacted aniline should not be used in consumer products where ventilation or protective clothing controls are not available to protect against the consequences of accidental spills.

Nitrobenzene

Nitrobenzene (NB) is a precursor to aniline, which is its primary commercial use. However, nitrobenzene can also be used to produce lubricants for motors and other machinery, and as an inexpensive perfume used in soaps or to mask the odors of shoe polishes and solvents.

Nitrobenzene is commonly used in the process of manufacturing synthetic rubber, dyes, and pharmaceuticals—namely, acetaminophen. In agricultural applications, nitrobenzene can be used as a pesticide, and some evidence suggests that it can be used as a plant growth and flowering stimulant.

Derivatives of nitrobenzene include solvents such as m-dinitrobenzene and nitrochlorbenzene.

Nitric Acid

The main application for nitric acid is in the agriculture industry, where it is neutralized with ammonia to create ammonium nitrate (one of the most commonly used fertilizers).

In the textile industry, nitric acid is used as a precursor to nylon and other synthetic fibers and plastics. It works well in the creation of pigments and dyes as well.

In electronics, it is an effective cleaning agent for silicon wafers. Nitric acid can also be used to produce explosives, and as an oxidizer for rocket fuels.

In very low concentrations, nitric acid is used as a wood treatment to create an artificial patina on pine and maple. Nitric acid is also a core component in the production of metal nitrates, inorganic nitrate salts, and various organic intermediates.