1. Performance Chemicals

• Intermediate for Quaternary Ammonium Compounds: TBA is a crucial starting material for synthesizing phase transfer catalysts like tributylmethylammonium chloride and tributylbenzylammonium chloride. 
• Strong Base and Acid Acceptor: TBA acts as a strong base and an acid acceptor, making it useful in reactions requiring a non-nucleophilic base. 
• Solvent in Organic Synthesis: It acts as a solvent in various organic reactions, including polymerization, due to its ability to dissolve reactants and facilitate the reaction.
• Reagent for Enamine and Amidine Synthesis: TBA is used in the synthesis of enamines and amidines from amines and amides.
• Component in Hydraulic Fluids: TBA is also used as an inhibitor in hydraulic fluids.
• As a Precursor to Phase Transfer Catalysts (PTCs): TBA is a key intermediate in the synthesis of quaternary ammonium salts, which are widely used as PTCs.  PTCs facilitate reactions between compounds that are not soluble in the same phase (e.g., an organic compound and an aqueous salt) by transferring a reactant from one phase to another.

2. Pharmaceuticals

• Intermediary in API Production: TNBA is used in the production of active pharmaceutical ingredients (APIs). 
• Building Block for Medicines: It serves as a flexible building block for synthesizing various chemical molecules, including those used in pharmaceuticals. 
• Synthesis of Compounds: TNBA is utilized in the synthesis of specific pharmaceutical compounds, like fengabine, tolbutamide, and others.

3. Agrochemicals

• Intermediate in Pesticide Synthesis: TNBA is utilized in the creation of other organic chemicals, including pesticides. It serves as a building block in the formation of pesticide molecules, contributing to their herbicidal and insecticidal properties.
• Building Block for Plant Growth Regulators: Similar to its role in pesticide synthesis, TNBA is also employed in the production of plant growth regulators, which are chemicals that can influence plant growth and development.

4. Water Treatment

• Anion Exchange: TBA is used in strong base anion exchange resins, which are particularly effective at removing nitrate ions from water sources. This is especially useful in treating wastewater or drinking water contaminated with nitrates, which can be harmful at high concentrations.

5. Metal Treatment

• Corrosion Inhibition: TNBA is used in the formulation of corrosion inhibitors, which protect metal surfaces from degradation caused by environmental factors like moisture and chemicals.