Lexidronam pentasodium

Lexidronam pentasodium (CAS 7651-99-2), also known as EDTMP pentasodium salt, is a phosphonate-based chelating agent.

Where is Lexidronam pentasodium used?

• Water treatment: controls scale deposition in cooling towers, boilers and industrial water circuits by sequestering hardness ions before they precipitate
• Pulp and paper: stabilizes peroxide bleaching baths, preventing metal-catalyzed decomposition
• Textile and leather: deactivates trace metals in pretreatment and dyeing formulations
• Personal care: chelant protecting product stability and preservative and bleaching systems
• It binds and sequesters metal ions to prevent scale formation.

Good to know: Specifications vary by supplier; buyers should confirm active content, pH range and phosphonate content against process requirements.

Commercial specifications

• Active content typically around 40–50%