Description

Diethylenetriamine Penta(Methylene Phosphonic Acid) Heptasodium Salt is a highly effective organic phosphonate scale and corrosion inhibitor. This powerful chelating agent is valued for its exceptional stability across a wide pH and temperature range, making it a critical component in demanding industrial water treatment formulations. It is primarily utilized by professionals in the water treatment, oilfield, and detergent industries to prevent scale formation and protect metal surfaces in circulating cooling water systems, boilers, and other process waters.

Application

• Industrial Water Treatment: As a superior threshold scale inhibitor for calcium carbonate, calcium sulfate, and barium sulfate in cooling water and boiler water systems.
• Oilfield Chemistry: Used in squeeze treatments and as an additive in drilling and completion fluids to control scale deposition in downhole and surface equipment.
• Detergent & Cleaning Formulations: Acts as a builder and chelating agent to sequester hardness ions (Ca2+, Mg2+) and enhance cleaning efficiency in industrial and institutional cleaners.
• Pulp & Paper Processing: Employed to control scale in digesters, washers, and bleach plants, and to stabilize hydrogen peroxide in bleaching stages.
• Textile Processing: Used as a peroxide stabilizer in bleaching baths and to prevent scale buildup on machinery.
• Metal Surface Treatment: Serves as a corrosion inhibitor and sequestrant in metal cleaning and plating solutions.

Basic Information

Item	Details
Product Name	Diethylenetriamine Penta(Methylene Phosphonic Acid) Heptasodium Salt
CAS No.	68155-78-2
Molecular Formula	C9H28N3O15P5Na7
Molecular Weight	~ 765.2 g/mol
Synonyms	DTPMP•Na7; Heptasodium Diethylenetriaminepenta(methylenephosphonate); Dequest 2066 (Trade Name); Amino tris(methylenephosphonic acid) derivative; Phosphonic acid, [[(phosphonomethyl)imino]bis[2,1-ethanediylnitrilobis(methylene)]]tetrakis-, heptasodium salt; ATMP derivative; Water treatment scale inhibitor DTPMP-Na7; Organic phosphonate DTPMPA heptasodium salt
EINECS	Contact for details

Quality Control

Our Diethylenetriamine Penta(Methylene Phosphonic Acid) Heptasodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance and meets high-purity standards for industrial applications. A Certificate of Analysis (COA) detailing key parameters such as active content, pH, and phosphonate concentration is provided with every shipment to guarantee product integrity and traceability.

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). Keep away from strong oxidizing agents. The product is hygroscopic; ensure containers are sealed after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Clear to pale yellow viscous liquid
Active Content (as DTPMP Acid)	≥ 50.0 %
pH (1% aqueous solution)	6.0 - 8.0
Density (20°C)	≥ 1.35 g/cm³
Chloride (as Cl⁻)	≤ 1.0 %
Iron (as Fe)	≤ 10 ppm

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