Description

Calcium Diethyl Diphosphonate is an organophosphorus compound that serves as a versatile intermediate and functional additive. Its value lies in its ability to act as a metal chelator and corrosion inhibitor, making it critical for processes requiring precise control of metal ions and scale formation. This product is essential for industrial water treatment, detergent formulations, and as a specialty additive in the oil & gas and textile processing industries.

Application

• Industrial Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems.
• Detergent & Cleaning Formulations: Functions as a builder and chelating agent to sequester calcium and magnesium ions, enhancing cleaning efficiency.
• Oilfield Chemicals: Used in scale squeeze treatments and as a component in drilling fluids to prevent mineral scale deposition in wells and equipment.
• Textile Processing: Serves as a sequestrant and stabilizer in bleaching, dyeing, and finishing baths to improve process consistency and fabric quality.
• Pulp & Paper Manufacturing: Helps control metal ion interference during bleaching processes, improving pulp brightness and yield.
• Metal Surface Treatment: Employed in metal cleaning and plating baths to prevent undesirable precipitation and scaling.
• Agricultural Chemicals: Can be utilized as a stabilizer or synergist in certain pesticide and fertilizer formulations.
• Research & Development: Serves as a key ligand or precursor in chemical synthesis and materials science research.

Basic Information

Product Name	Calcium Diethyl Diphosphonate
CAS No.	39148-20-4
Molecular Formula	C4H10CaO6P2
Molecular Weight	248.14 g/mol
Synonyms	Calcium Ethyl Diphosphonate; Calcium Diethyl Diphosphonate; Diethylphosphonic Acid Calcium Salt; Calcium Diethylphosphonate; Ethane-1,1-diphosphonic Acid Calcium Salt; Dequest 2010 (Trade Name); HEDP-Ca; 1-Hydroxyethylidene-1,1-diphosphonic Acid Calcium Salt (common reference)
EINECS	Contact for details

Quality Control

Our Calcium Diethyl Diphosphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets defined specifications for identity, purity, and performance. Certificates of Analysis (COA) are provided with every shipment, detailing key parameters such as assay, moisture content, and heavy metal limits. We adhere to relevant industry standards and can support requirements for ISO 9001 and REACH compliance.

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 minimize exposure to atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Calcium Content	15.0 - 16.5 %
Loss on Drying	≤ 2.0 %
pH (1% Solution)	5.0 - 7.0
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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