Description

Phosphonic Acid, (Hydroxymethyl)-, Sodium Salt is the sodium salt derivative of hydroxymethylphosphonic acid, a key organophosphorus compound. This product is valued for its excellent chelating and scale inhibition properties, making it a critical component in water treatment and industrial cleaning formulations. It is primarily needed by manufacturers in the water treatment, detergent, textile, and pulp & paper industries for controlling mineral scale and sequestering metal ions.

Application

• Industrial Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling water, boiler water, and reverse osmosis systems.
• Detergent & Cleaning Formulations: Serves as a powerful builder and chelating agent to enhance cleaning efficiency by inactivating water hardness ions (calcium, magnesium).
• Textile Processing: Used as a stabilizer and sequestrant in peroxide bleaching baths and other wet processing stages to improve fabric quality.
• Pulp & Paper Industry: Functions as a chelant in bleaching processes and as a dispersant to prevent scale deposition on equipment.
• Personal Care Products: Incorporated into certain formulations as a stabilizing agent and to control water hardness.
• Metal Surface Treatment: Employed in metal cleaning and plating baths to prevent precipitation and improve surface finish.

Basic Information

Product Name	Phosphonic Acid, (Hydroxymethyl)-, Sodium Salt
CAS No.	31182-38-4
Molecular Formula	C H4 Na O5 P
Molecular Weight	158.00 g/mol
Synonyms	Sodium Hydroxymethylphosphonate; Hydroxymethylphosphonic Acid Sodium Salt; (Hydroxymethyl)phosphonic Acid Monosodium Salt; Phosphonic Acid, P-(Hydroxymethyl)-, Monosodium Salt; HMP-Na; SHMP; Sodium (Hydroxymethyl)phosphonate; Belclene 200
EINECS	Contact for details

Quality Control

Our Phosphonic Acid, (Hydroxymethyl)-, Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

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); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
pH (1% Solution)	6.0 - 8.0
Water Content	≤ 2.0 %
Chloride (as Cl)	≤ 0.1 %
Sulfate (as SO4)	≤ 0.1 %

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