Description

Heptasodium Heptahydrogen [[(Phosphonatomethyl)Imino]Bis[Ethane-2,1-Diyl[(Phosphonomethyl)Imino]Ethane-2,1-Diylnitrilobis(Methylene)]]Tetrakisphosphonate is a high-performance, multi-dentate phosphonate-based chelating agent and scale inhibitor. This compound is engineered to deliver superior sequestration and threshold inhibition of problematic metal ions, particularly calcium, magnesium, and iron, under demanding conditions. It is a critical component for industrial water treatment, detergent formulations, and cleaning processes where stability, efficiency, and environmental compatibility are paramount.

Application

• Industrial Water Treatment: Primary application as a highly effective scale and corrosion inhibitor in cooling water systems, boilers, and reverse osmosis (RO) membranes.
• Detergent & Cleaning Formulations: Acts as a powerful builder and sequestrant to enhance cleaning efficiency by inactivating water hardness ions and preventing inorganic salt deposition.
• Pulp & Paper Processing: Used for peroxide stabilization and as a chelant in bleaching processes to improve brightness and protect equipment from scale.
• Textile Processing: Employed in dyeing and scouring baths to sequester metal ions that can interfere with chemical processes and affect color quality.
• Oilfield Applications: Serves as a scale inhibitor in squeeze treatments and production systems to prevent mineral scale formation in wells and pipelines.
• Personal Care Products: Incorporated into formulations such as shampoos and liquid soaps as a chelating agent to improve stability and performance.
• Metal Surface Treatment: Used in metal cleaning, plating, and finishing baths to control water hardness and prevent precipitation.
• Agricultural Chemicals: Can be used as a stabilizer and sequestrant in certain pesticide and fertilizer formulations.

Basic Information

Product Name	Heptasodium Heptahydrogen [[(Phosphonatomethyl)Imino]Bis[Ethane-2,1-Diyl[(Phosphonomethyl)Imino]Ethane-2,1-Diylnitrilobis(Methylene)]]Tetrakisphosphonate
CAS No.	93920-44-6
Molecular Formula	C17H28N3Na7O21P7 (Approximate, based on heptasodium salt)
Molecular Weight	~ 1085 g/mol (Approximate)
Synonyms	Diethylenetriamine Penta(methylene phosphonic acid) Heptasodium Salt; DTPMP•Na7; Heptasodium salt of Diethylenetriaminepenta(methylenephosphonic acid); Phosphonic acid, [[(phosphonomethyl)imino]bis[2,1-ethanediylnitrilobis(methylene)]]tetrakis-, heptasodium salt; Heptasodium hydrogen [[(phosphonatomethyl)imino]bis(ethane-2,1-diylnitrilobis(methylene))]tetrakis(phosphonate); Dequest 2066 (similar type); Aquaquest 500 (similar type); Amino tris(methylene phosphonic acid) derivative heptasodium salt
EINECS	Contact for details

Quality Control

Our Heptasodium Heptahydrogen [[(Phosphonatomethyl)Imino]Bis[Ethane-2,1-Diyl[(Phosphonomethyl)Imino]Ethane-2,1-Diylnitrilobis(Methylene)]]Tetrakisphosphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance and meets specifications for critical parameters such as active content, pH, and impurity levels. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory needs.

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). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	Clear to slightly hazy liquid or hygroscopic solid
Active Content (as acid)	≥ 50%
pH (1% aqueous solution)	6.0 - 8.0
Density (20°C)	1.30 - 1.45 g/cm³
Identification (IR)	Conforms
Iron (Fe)	≤ 10 ppm
Chloride (Cl)	≤ 0.1%

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