Description

Methylenebisphosphonic Acid-P,P'-Disodium Salt is a high-purity, water-soluble organophosphonate compound. It serves as a highly effective chelating agent and scale inhibitor, critical for controlling mineral deposition in industrial water systems. This product is essential for manufacturers and formulators in the water treatment, detergent, and personal care industries seeking reliable performance and supply chain stability.

Application

• Industrial Water Treatment: Primary application as a scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems.
• Detergent & Cleaning Formulations: Acts as a builder and sequestrant to enhance cleaning efficiency by inactivating water hardness ions (Ca²⁺, Mg²⁺).
• Personal Care Products: Used in formulations such as shampoos and liquid soaps as a chelating agent to stabilize product integrity.
• Oilfield Chemicals: Employed in scale squeeze treatments and as a component in drilling fluids to prevent mineral scale formation.
• Textile & Pulp Processing: Serves as a peroxide stabilizer and sequestrant in bleaching and dyeing processes.
• Industrial Cleaning: Key ingredient in metal cleaning and electroplating solutions to prevent scale on surfaces and equipment.

Basic Information

Product Name	Methylenebisphosphonic Acid-P,P'-Disodium Salt
CAS No.	25681-89-4
Molecular Formula	C H4 Na2 O6 P2
Molecular Weight	247.97 g/mol
Synonyms	Disodium Methylenediphosphonate; Methylene Diphosphonic Acid Disodium Salt; MDPNa2; Medronate Disodium; (Phosphonomethyl)iminobis(methylenephosphonic acid) disodium salt; MBPA Disodium Salt; HEDP-Na2 (related class); Organophosphonate Disodium Salt
EINECS	247-148-4

Quality Control

Our Methylenebisphosphonic Acid-P,P'-Disodium Salt is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with every shipment to guarantee compliance with your technical 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 initial use to prevent absorption of atmospheric moisture, which may affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Anhydrous Basis)	≥ 98.0 %
pH (1% Aqueous Solution)	4.0 - 6.0
Water Content (Karl Fischer)	≤ 2.0 %
Heavy Metals (as Pb)	≤ 10 ppm
Chloride (Cl)	≤ 0.1 %
Solubility (in Water)	Clear, colorless solution

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