Description

Phosphonic Acid, Methyl-, Monomethyl Ester, Monosodium Salt is an organophosphorus compound that serves as a versatile intermediate and functional additive. This chemical is valued for its ability to act as a scale inhibitor, chelating agent, and corrosion inhibitor in various industrial water treatment and process applications. It is primarily utilized by manufacturers and formulators in the water treatment, detergent, and specialty chemical industries seeking effective phosphonate-based performance.

Application

• Industrial Water Treatment: Key component in formulations for scale and corrosion inhibition in cooling water, boiler water, and reverse osmosis systems.
• Detergent & Cleaning Agents: Acts as a builder and chelating agent to sequester hardness ions (Ca²⁺, Mg²⁺) and enhance cleaning efficiency.
• Pulp & Paper Processing: Used as a stabilizer and chelant in bleaching processes and to control scale in paper mill water circuits.
• Textile Auxiliary: Employed in dyeing and finishing processes as a dispersant and to prevent metal-ion catalyzed degradation of peroxides.
• Oilfield Chemicals: Incorporated into drilling fluid and production chemical packages for scale control.
• Personal Care Products: Functions as a chelating agent in certain cosmetic and personal care formulations.

Basic Information

Product Name	Phosphonic Acid, Methyl-, Monomethyl Ester, Monosodium Salt
CAS No.	73750-69-3
Molecular Formula	C₂H₆NaO₄P
Molecular Weight	148.03 g/mol
Synonyms	Methylphosphonic Acid Monomethyl Ester Sodium Salt; Sodium Methyl Methylphosphonate; Monosodium Methyl Methylphosphonate; Methyl Methylphosphonate Sodium Salt; (Methoxy-methyl-phosphoryl)oxy Sodium; Phosphonic Acid, P-methyl-, Methyl Ester, Sodium Salt; ATMP-Na; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our Phosphonic Acid, Methyl-, Monomethyl Ester, Monosodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) documenting identity, assay, and impurity profiles is provided with every shipment to guarantee compliance with your specifications.

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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which may affect quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0%
pH (1% Solution)	7.0 - 9.0
Water Content	≤ 2.0%
Heavy Metals (as Pb)	≤ 10 ppm

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