Tetraethylenepentamine (TEPA) is a versatile polyamine used across multiple industries due to its diverse chemical properties. It serves as a curing and crosslinking agent in the production of epoxy resins and polymers, enhancing mechanical strength, thermal stability, and durability of the final products.

In water treatment, TEPA acts as a chelating agent to remove heavy metal ions, ensuring cleaner water. In the oil and gas industry, it functions as a corrosion inhibitor for pipelines and equipment, and as an absorbent for toxic gases such as CO₂ and H₂S in petrochemical processes.

TEPA is a key component in the synthesis of surfactants, lubricants, and additives, improving their performance and longevity. In the textile industry, it is employed as a dye fixative and auxiliary to achieve vibrant, long-lasting colors and enhance fiber properties.

Additionally, it plays a role in agriculture as a component in fertilizers and soil conditioners to improve nutrient absorption in plants, and in pharmaceuticals for synthesizing bioactive compounds and medical products.