Diethylene Triamine Penta (Methylene Phosphonic Acid), also known as DTPMPA, is a water-soluble organophosphonic acid commonly used in industrial water treatment, oilfield applications, and personal care and household products. It is a chelating agent that can form stable complexes with metal ions, providing effective scale and corrosion inhibition in water systems. In personal care products, DTPMPA is used as a sequestering agent, stabilizer, and dispersant, while in household products, it is used as a scale and corrosion inhibitor to improve cleaning performance and prevent mineral deposits in hard water. DTPMPA is known for its compatibility with other ingredients, stability, and effectiveness in preventing scale and corrosion.