Description

Ethylenediamine Tetra(Methylenephosphonic Acid) Pentasodium Salt is a highly effective phosphonate-based chelating agent and scale inhibitor. This compound matters for its exceptional ability to sequester di- and trivalent metal ions, such as calcium and iron, even under high-temperature and high-pH conditions. Industries that require robust water treatment, industrial cleaning, or mineral processing rely on its superior threshold inhibition and dispersant properties to prevent scale formation and control corrosion.

Application

• Industrial Water Treatment: Primary scale and corrosion inhibitor in cooling water systems, boilers, and reverse osmosis membranes.
• Pulp & Paper Manufacturing: Chelating agent in bleaching processes to stabilize peroxides and improve brightness.
• Textile Processing: Used as a peroxide stabilizer and sequestrant to prevent metal-catalyzed degradation of bleaching agents.
• Oilfield Chemistry: Scale inhibitor in squeeze treatments and production fluids to prevent carbonate and sulfate scale deposition.
• Industrial & Institutional Cleaning: Key component in heavy-duty liquid detergents and cleaners for its superior chelation and soil suspension properties.
• Personal Care: Chelating agent in formulations to enhance stability and shelf-life by binding trace metals.

Basic Information

Product Name	Ethylenediamine Tetra(Methylenephosphonic Acid) Pentasodium Salt
CAS No.	7651-99-2
Molecular Formula	C6H12N2O12P4Na5
Molecular Weight	685.1 g/mol
Synonyms	EDTMP•Na5; Ethylenediaminetetrakis(methylenephosphonic acid) pentasodium salt; Pentasodium ethylenediamine tetramethylenephosphonate; Dequest® 2041 (Trade Name); EDTMPA pentasodium salt; Ethylenediamine-N,N,N',N'-tetrakis(methylenephosphonic acid) pentasodium salt; Amino tris(methylenephosphonic acid) derivative; Phosphonic acid, (1,2-ethanediylbis[nitrilobis(methylene)])tetrakis-, pentasodium salt
EINECS	231-615-6

Quality Control

Our Ethylenediamine Tetra(Methylenephosphonic Acid) Pentasodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for active content, pH, and impurity profiles. Certificates of Analysis (COA) documenting purity and performance characteristics are available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the original container is kept tightly sealed when not in use to prevent absorption of atmospheric moisture and caking.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Active Content (as acid)	≥ 25.0 %
pH (1% aqueous solution)	6.0 - 8.0
Density (20°C)	≥ 1.25 g/cm³
Iron (Fe)	≤ 10 ppm
Chloride (Cl)	≤ 50 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.