Description

Nitrilotris(Methylenephosphonic Acid), Trisodium Salt is a high-performance, water-soluble phosphonate scale and corrosion inhibitor. This compound is valued for its exceptional chelating power and thermal stability, even in high-pH and high-temperature environments. It is a critical additive for industrial water treatment, oilfield operations, and detergent formulations where control of mineral scale and metal ion sequestration is required.

Application

• Industrial Water Treatment: Primary application as a highly effective scale inhibitor for calcium carbonate, sulfate, and phosphate scales in cooling towers, boilers, and reverse osmosis systems.
• Oilfield Chemicals: Used in drilling fluids, completion brines, and squeeze treatments to prevent scale deposition in downhole equipment and formations.
• Detergent & Cleaning Formulations: Acts as a builder and sequestrant to inactivate water hardness ions (Ca²⁺, Mg²⁺), enhancing surfactant efficiency and preventing soap scum.
• Pulp & Paper Processing: Employed as a chelant in bleaching processes and to control scale in digesters and paper machines.
• Textile Processing: Used in dyeing and bleaching baths to sequester metal ions that can cause fabric discoloration or interfere with chemical processes.
• Metal Surface Treatment: Functions as a corrosion inhibitor and sequestering agent in metal cleaning, pickling, and plating solutions.

Basic Information

Product Name	Nitrilotris(Methylenephosphonic Acid), Trisodium Salt
CAS No.	7611-50-9
Molecular Formula	C₃H₉NNa₃O₉P₃
Molecular Weight	409.0 g/mol
Synonyms	Aminotris(methylenephosphonic acid) trisodium salt; NTMP, Trisodium salt; Nitrilotrimethylenephosphonic acid trisodium salt; NTF; Trisodium nitrilotris(methylenephosphonate); Dequest 2006 (trade name); Phosphonic acid, (nitrilotris(methylene))tris-, trisodium salt; ATMP•Na₃
EINECS	231-548-0

Quality Control

Our Nitrilotris(Methylenephosphonic Acid), Trisodium Salt is manufactured under a rigorous quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for active content, pH, and impurity profiles. A Certificate of Analysis (COA) documenting purity, identity, and key physical-chemical parameters is provided with each shipment to guarantee consistency and performance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture and caking.

Specification

Item	Specification
Appearance	Clear to slightly hazy aqueous solution
Active Content (as NTMP Acid)	≥ 50.0 %
pH (1% aqueous solution)	7.0 - 9.0
Density (20°C)	1.30 - 1.35 g/mL
Chloride (as Cl⁻)	≤ 0.5 %
Iron (as Fe)	≤ 10 ppm

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