Description

Phosphoric Acid Ethyldisodium Salt is an organophosphorus compound with significant utility as a chelating agent and chemical intermediate. Its primary value lies in its ability to bind metal ions, making it a critical component in formulations requiring water treatment, scale inhibition, and stabilization. This product is essential for manufacturers and R&D facilities in the industrial cleaning, detergent, and specialty chemical sectors. We supply high-purity grades to meet the stringent requirements of global industrial applications.

Application

• Industrial Water Treatment: Acts as a scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems.
• Cleaning & Detergent Formulations: Serves as a chelating builder to enhance cleaning efficiency by sequestering water-hardening ions like calcium and magnesium.
• Chemical Synthesis: Used as a key intermediate or catalyst in the production of specialty phosphonates and other organophosphorus compounds.
• Pulp & Paper Processing: Employed in bleaching and pulping processes to control metal ion concentrations and improve process efficiency.
• Textile Auxiliaries: Functions in dyeing and finishing baths to prevent metal-ion interference and improve color fastness.
• Oilfield Chemicals: Incorporated into drilling fluid and scale inhibitor packages for downhole applications.

Basic Information

Product Name	Phosphoric Acid Ethyldisodium Salt
CAS No.	17323-83-0
Molecular Formula	C2H7Na2O4P
Molecular Weight	188.03 g/mol
Synonyms	Ethyldisodium Phosphonate; Disodium Ethylphosphonate; Ethylphosphonic Acid Disodium Salt; (Hydroxy(oxido)phosphoryl)ethanoic Acid Disodium Salt; Dequest 2016 (Trade Name); 1-Hydroxyethane-1,1-diphosphonic Acid Disodium Salt; HEDP·Na2; 1-Hydroxyethylidene-1,1-diphosphonic Acid Disodium Salt
EINECS	241-354-1

Quality Control

Our Phosphoric Acid Ethyldisodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, pH, and heavy metal content are provided with every shipment. We support compliance with global regulatory frameworks including REACH.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and must be stored in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture and CO2, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HEDP·Na2)	≥ 94.0 %
pH (1% aqueous solution)	4.0 - 6.0
Water Content	≤ 5.0 %
Chloride (as Cl)	≤ 0.01 %
Heavy Metals (as Pb)	≤ 10 ppm

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