Description

Methylenediphosphonic Acid Trisodium is a high-purity organophosphonate compound, valued for its exceptional chelating and scale inhibition properties. Its primary commercial value lies in its ability to effectively bind to metal ions, preventing precipitation and scaling in complex aqueous systems. This makes it a critical component for industrial water treatment, detergent formulations, and as a stabilizing agent in various chemical processes where control over metal ions is paramount.

Application

• Industrial Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems.
• Detergent & Cleaning Formulations: Serves as a powerful builder and sequestrant to enhance cleaning efficiency by inactivating water hardness ions (Ca²⁺, Mg²⁺).
• Oilfield Chemicals: Used in scale squeeze treatments and as a component in drilling fluids to control mineral scaling in downhole equipment.
• Pulp & Paper Processing: Functions as a chelant in bleaching processes and to control metal-ion catalyzed decomposition of hydrogen peroxide.
• Textile Processing: Employed as a stabilizer and sequestrant in dyeing and bleaching baths to improve color consistency and fabric quality.
• Personal Care Products: Incorporated into formulations as a chelating agent to enhance stability and shelf-life.
• Chemical Synthesis & Catalysis: Utilized as a ligand or intermediate in the preparation of specialized metal-organic frameworks (MOFs) and catalysts.
• Agricultural Chemicals: Can be used in certain fertilizer and pesticide formulations to improve nutrient availability and formulation stability.

Basic Information

Item	Details
Product Name	Methylenediphosphonic Acid Trisodium
CAS No.	207556-02-3
Molecular Formula	C H7 Na3 O8 P2 or CH2[PO(ONa)2]2 • xH2O
Molecular Weight	Anhydrous: 285.99 g/mol
Synonyms	Trisodium Methylenediphosphonate; Methylene Diphosphonic Acid Trisodium Salt; MDPA Trisodium Salt; MDP-Na3; (Phosphonomethyl)iminobis(methylenephosphonic acid) trisodium salt; 1-Hydroxyethylidene-1,1-diphosphonic acid trisodium salt (related compound); HEDP Trisodium Salt (common trade name reference); Amino tris(methylenephosphonic acid) trisodium salt (ATMP, related compound).
EINECS	Contact for details

Quality Control

Our Methylenediphosphonic Acid Trisodium is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications, including assay, impurity profile, and pH. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

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 or solid
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
pH (1% aqueous solution)	9.0 - 11.0
Water Content (KF)	≤ 5.0%
Chloride (as Cl)	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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