Lexidronam pentasodium

Lexidronam pentasodium (CAS 7651-99-2), also known as EDTMP pentasodium salt, is a phosphonate-based chelating agent used across industrial and specialty chemical sectors. It binds and sequesters metal ions to prevent scale formation.

This chemical is particularly effective at managing calcium, magnesium, and heavy metals to prevent discoloration and process interference in aqueous systems. It is a vital component for maintaining efficiency in high-volume industrial operations.

In water treatment, it controls scale deposition in cooling towers, boilers, and industrial water circuits by sequestering hardness ions before they precipitate. This action extends the lifespan of expensive machinery and piping systems.

Pulp and paper manufacturers use it to stabilize peroxide bleaching baths, preventing metal-catalyzed decomposition that would reduce whitening efficiency. This ensures a consistent and high-quality output during the manufacturing process.

Textile and leather processors incorporate it into pretreatment and dyeing formulations to deactivate trace metals. This prevents uneven color uptake or fabric damage that can occur when metallic impurities are present in the water.

In personal care formulations, it functions as a chelant to protect product stability and enhance the performance of preservative and bleaching systems. It ensures that consumer products remain effective and visually appealing over time.

Lexidronam pentasodium is supplied as an aqueous solution, with active content concentrations typically around 40–50%. Technical grade is the standard offering across most global industrial supply channels and distribution networks.

Specifications vary by supplier, and buyers should confirm active content, pH range, and phosphonate content against their process requirements. Proper documentation ensures the material meets the specific needs of the intended application.