Description

Ethylidenediphosphonic Acid is a highly effective organophosphorus compound known for its excellent chelating and scale inhibition properties. Its primary value lies in its ability to form stable complexes with metal ions, making it a critical component in water treatment and industrial cleaning formulations. This product is essential for industries such as water treatment, oilfield chemicals, and industrial cleaning, where controlling scale and corrosion is paramount for operational efficiency and asset protection.

Application

• Industrial Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling water, boiler water, and reverse osmosis systems.
• Oilfield Chemicals: Used in scale squeeze treatments and as a component in drilling and completion fluids to prevent mineral scale deposition in wells and pipelines.
• Pulp & Paper Industry: Serves as a chelant and dispersant in bleaching processes and to control calcium scale.
• Industrial Cleaning: Formulated into acidic cleaners and descalers for equipment in food processing, dairy, and thermal power plants.
• Textile Processing: Used as a sequestering agent to prevent metal ion interference during dyeing and finishing operations.
• Personal Care: Functions as a chelating agent in cosmetic and personal care formulations to stabilize product integrity.

Basic Information

Product Name	Ethylidenediphosphonic Acid
CAS No.	6145-33-1
Molecular Formula	C2H8O6P2
Molecular Weight	206.03 g/mol
Synonyms	EDPA; 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP); (1-Hydroxyethylidene)bisphosphonic acid; Etidronic Acid; Dequest 2010; Phosphonic acid, (1-hydroxyethylidene)bis-; Ethane-1-hydroxy-1,1-diphosphonic acid
EINECS	228-179-8

Quality Control

Our Ethylidenediphosphonic Acid is manufactured under a strict quality management system to ensure batch-to-batch consistency and high performance. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as active content, pH, and impurity levels. Our quality commitment aligns with industrial standards, and we can support compliance requirements for various global markets.

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) and should be kept in its original packaging to minimize exposure to atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Active Content (as HEDP)	≥ 60.0 %
pH (1% aqueous solution)	≤ 2.0
Density (20°C)	1.40 - 1.48 g/cm³
Iron (Fe)	≤ 10 ppm
Chloride (Cl)	≤ 50 ppm
Identification (IR)	Conforms

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