Description

Tetrasodium Ethylene 1,1-Diphosphonate is a high-purity, water-soluble phosphonate compound widely recognized for its exceptional chelating and scale inhibition properties. This chemical is critical for controlling metal ion precipitation and stabilizing formulations in demanding aqueous systems. It is essential for manufacturers and processors in the water treatment, detergent, textile, and personal care industries seeking to enhance product performance and prevent costly scaling issues.

Application

• Industrial Water Treatment: A highly effective scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems, particularly for controlling calcium carbonate and sulfate scales.
• Detergent & Cleaning Formulations: Acts as a powerful builder and sequestrant to inactivate water hardness ions (Ca²⁺, Mg²⁺), improving surfactant efficiency and preventing inorganic salt deposition.
• Textile Processing: Used as a peroxide stabilizer in bleaching baths and as a chelant in dyeing processes to prevent metal-ion catalyzed degradation and ensure uniform color.
• Personal Care Products: Functions as a chelating agent in shampoos, soaps, and lotions to enhance stability, preserve clarity, and improve the efficacy of preservative systems.
• Pulp & Paper Industry: Employed in bleaching sequences to stabilize hydrogen peroxide, improve brightness, and protect pulp fibers from metal-catalyzed degradation.
• Oilfield Applications: Serves as a scale inhibitor in squeeze treatments and production fluids to prevent mineral scale formation in wells and pipelines.
• Industrial Cleaners: Key component in acid and alkaline cleaners for industrial equipment, where it chelates metal ions to prevent redeposition and improve rinsability.
• Agriculture: Used in micronutrient fertilizers and agrochemical formulations to chelate and deliver essential metal ions to plants in an available form.

Basic Information

Product Name	Tetrasodium Ethylene 1,1-Diphosphonate
CAS No.	33016-77-2
Molecular Formula	C₂H₄Na₄O₁₀P₂
Molecular Weight	337.93 g/mol
Synonyms	Etidronic Acid Tetrasodium Salt; Tetrasodium Etidronate; Tetrasodium (1-Hydroxyethylidene)bisphosphonate; HEDP•Na₄; 1-Hydroxyethane-1,1-diphosphonic Acid Tetrasodium Salt; Dequest 2016; Briquest ADPA-60SH; Phosphonic Acid, (1-Hydroxyethylidene)bis-, Tetrasodium Salt
EINECS	251-327-5

Quality Control

Our Tetrasodium Ethylene 1,1-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 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, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the original container tightly sealed to prevent absorption of atmospheric moisture which may lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
pH (1% Solution)	10.0 - 12.0
Water Content	≤ 5.0%
Chloride (as Cl)	≤ 0.1%
Sulfate (as SO₄)	≤ 0.5%
Iron (Fe)	≤ 50 ppm

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