Description

Disodium Azacycloheptane Diphosphonate is a high-purity, organophosphorus chelating agent and scale inhibitor. This compound is valued for its exceptional ability to sequester di- and trivalent metal ions, such as calcium and magnesium, under demanding conditions. It is primarily utilized in industrial water treatment, detergent formulations, and as a critical additive in oilfield chemistry to prevent scale deposition and corrosion.

Application

• Industrial Water Treatment: Acts as a highly effective threshold inhibitor and dispersant for calcium carbonate, sulfate, and phosphate scales in cooling towers, boilers, and reverse osmosis systems.
• Oilfield Chemicals: A key component in scale inhibitor squeeze treatments and production chemicals to control mineral scaling in downhole and topside facilities, enhancing operational efficiency.
• Detergent & Cleaning Formulations: Serves as a powerful builder and chelant in industrial and institutional cleaning products, enhancing surfactant performance by controlling water hardness.
• Pulp & Paper Processing: Used to control metal ion interference during bleaching and pulping processes, improving pulp brightness and process stability.
• Textile Auxiliary: Functions as a sequestrant in dyeing and bleaching baths to prevent unwanted precipitation and ensure consistent, high-quality color results.
• Personal Care Products: Incorporated as a stabilizing and chelating agent in certain cosmetic and personal care formulations to enhance shelf-life and product integrity.

Basic Information

Product Name	Disodium Azacycloheptane Diphosphonate
CAS No.	62682-16-0
Molecular Formula	C5H11NNa2O6P2
Molecular Weight	289.07 g/mol
Synonyms	Disodium 1-Azacycloheptane-1,1-diphosphonate; Disodium 1-Aza-1,1-diphosphonocycloheptane; Azacycloheptane Diphosphonic Acid, Disodium Salt; HEDP-Na2 (specific to the azacycloheptane structure); Amino Trimethylene Phosphonic Acid Derivative; 1,1-Diphosphonopiperidine, Disodium Salt (common naming variant); Phosphonic acid, P,P'-(1-aza-1-cycloheptanediyl)bis-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium Azacycloheptane Diphosphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, phosphonate content, and impurity profiles are available upon request to support your quality assurance protocols.

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); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
pH (1% Solution)	6.0 - 8.0
Water Content	≤ 2.0%
Heavy Metals (as Pb)	≤ 10 ppm

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