Ethylenediaminetetra(methylenephosphonic acid)

Ethylenediaminetetra(methylenephosphonic acid) (CAS 1429-50-1), commonly known as EDTMP, is a phosphonate chelating agent used across industrial water treatment, oilfield chemistry, and process industries. It binds calcium, magnesium, iron, and other metal ions to prevent scale formation and inhibit corrosion in high-temperature, high-hardness water systems. In water treatment and cooling water systems, it controls calcium carbonate scale.

The chemical effectively manages calcium sulfate scale deposition, extending equipment service life in boilers and heat exchangers. Oilfield operators use it as a scale inhibitor and corrosion control additive in injection water. It is also utilized in produced water handling to maintain system integrity. In textile and paper processing, it sequesters hardness ions and trace metals that would otherwise interfere with bleaching and dyeing operations.

Coatings and cleaning formulations incorporate this agent to stabilize peroxide-based systems and prevent metal-catalyzed decomposition. This ensures the longevity and effectiveness of various industrial chemical formulations. The product is supplied as an aqueous solution, typically at concentrations around 20–50%, and is also available in solid form for applications requiring dry blending or concentrated dosing for specific needs.

Technical grade is the standard commercial offering, with specifications aligned to industrial water treatment and oilfield end uses. Purity and active content are the primary quality parameters buyers should confirm. Ensuring the product meets necessary industrial requirements is essential for performance. Suppliers provide detailed specifications to ensure the material is suitable for high-demand chemical processing environments.