Description

Nonasodium heptahydrogen [ethane-1,2-diylbis[[(phosphonatomethyl)imino]ethane-2,1-diyl[(phosphonatomethyl)imino]ethane-2,1-diylnitrilobis(methylene)]]tetrakisphosphonate is a high-performance, multi-dentate phosphonate-based chelating agent and scale inhibitor. This compound is engineered for superior sequestration of di- and trivalent metal ions, such as calcium, magnesium, and iron, under demanding conditions. It is a critical component for industries requiring advanced water treatment, process stabilization, and mineral scale control.

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.
• Pulp & Paper Processing: Used for peroxide stabilization and as a chelant in bleaching processes to improve efficiency and protect equipment.
• Textile & Dyeing Auxiliary: Prevents metal-ion interference during dyeing and finishing processes, ensuring color consistency and fabric quality.
• Oilfield Chemicals: Employed in scale squeeze treatments and as an additive in drilling and production fluids to control mineral deposition.
• Personal Care Products: Functions as a chelating agent in formulations like shampoos and liquid soaps to improve stability and shelf life.

Basic Information

Product Name	Nonasodium heptahydrogen [ethane-1,2-diylbis[[(phosphonatomethyl)imino]ethane-2,1-diyl[(phosphonatomethyl)imino]ethane-2,1-diylnitrilobis(methylene)]]tetrakisphosphonate
CAS No.	93892-81-0
Molecular Formula	C17H46N5Na9O34P8 (or related hydrate forms)
Molecular Weight	Contact for details
Synonyms	Nonasodium salt of HEDP derivative; Polyamino polyphosphonate; Amino tris(methylenephosphonic acid) sodium salt polymer; ATMP-Na9 (common trade name reference); Phosphonobutane tricarboxylic acid sodium salt analog; PBTC-Na; Hexadentate phosphonate chelator; Scale inhibitor 93892-81-0; Water treatment polymer chelant
EINECS	Contact for details

Quality Control

Our production of this phosphonate chelant adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified against key parameters including active content, pH, and iron sequestration value. Certificates of Analysis (COA) documenting purity and specifications are available upon request to support your quality assurance and regulatory compliance 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 material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product performance and handling.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Active Content (as acid)	≥ 50.0 %
pH (1% aqueous solution)	6.0 - 8.0
Density (20°C)	1.30 - 1.45 g/cm³
Iron Sequestration Value (as CaCO3)	≥ 300 mg/g
Chloride (as Cl)	≤ 0.5 %

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