Product Description
Diethylenetriamine Penta(methylene Phosphonic Acid) (DTPMPA) CAS#15827-60-8 is a high-performance organic phosphonate widely used as a scale inhibitor, corrosion inhibitor, and metal-ion chelating agent in industrial water treatment systems. It is typically supplied as a brown to reddish-brown viscous liquid.
With multiple phosphonic acid groups, DTPMPA exhibits strong chelating properties and can form stable complexes with metal ions, helping to control metal-ion concentrations in aqueous systems. It also provides effective scale inhibition by interfering with the nucleation and growth of mineral crystals, as well as dispersing suspended particles to reduce scale deposition.
DTPMPA is particularly effective against calcium carbonate and calcium sulfate scale, helping maintain heat-transfer efficiency and operational stability in cooling water systems, boiler water treatment, and other industrial water circulation processes. It also offers corrosion inhibition performance through its interaction with metal surfaces and metal ions, making it a versatile component in industrial water-treatment formulations.
Product Parameters
| Boiling point | 1003.3±75.0 °C(Predicted) |
| Density | 1.35 (50% aq.) |
| Vapor pressure | 0Pa at 25℃ |
| Storage temp. | Hygroscopic, -20°C Freezer, Under inert atmosphere |
| Solubility | Aqueous Base (Sparingly), Water |
| Form | Oil |
| Pka | 0.59±0.10(Predicted) |
| Color | Pale Yellow to Brown |
| Water Solubility | 500g/L at 25℃ |
| BRN | 2068968 |
| InChIKey | DUYCTCQXNHFCSJ-UHFFFAOYSA-N |
| SMILES | P(=O)(O)(O)CN(CCN(CCN(CP(=O)(O)O)CP(=O)(O)O)CP(=O)(O)O)CP(=O)(O)O |
| LogP | -3.4 |
| CAS DataBase Reference | 15827-60-8(CAS DataBase Reference) |
| EPA Substance Registry System | Phosphonic acid, [[(phosphonomethyl)imino]bis[2,1-ethanediylnitrilobis(methylene)]]tetrakis- (15827-60-8) |
Safety Information
| Hazard Codes | Xi,C |
| Risk Statements | 36/37/38-51/53-41-37/38 |
| Safety Statements | 26-36-33-28-23-16-9-39 |
| RIDADR | UN 1789 8/PG 2 |
| WGK Germany | - |
Application Scenarios
Diethylenetriaminepenta(methylenephosphonic acid) (DTPMPA) is a multifunctional organic phosphonate used in industrial water treatment, materials research, and coordination chemistry. Its strong metal-ion chelating ability and interaction with mineral crystals make it useful in a range of specialized applications.
Industrial Water Treatment: DTPMPA is widely used as a scale and corrosion inhibitor in cooling water systems, boiler water treatment, and industrial water circulation processes. It helps control calcium carbonate and calcium sulfate deposition and supports stable system operation.
Nanomaterial Preparation: DTPMPA can serve as a phosphorus-containing component in the preparation of functional nanomaterials. It has also been investigated in the development of chitosan-based nanoparticles for research into plutonium decorporation following pulmonary exposure.
Crystallization Research: DTPMPA is used in studies examining the nucleation, growth, and crystallization kinetics of inorganic salts, including sodium sulfate, in the presence of organophosphonic acids.
Coordination Chemistry: As a multidentate phosphonate ligand, DTPMPA can coordinate with metal ions, including Ce³⁺. It is therefore useful in the preparation and characterization of metal–phosphonate complexes through techniques such as luminescence spectroscopy.
Environmental and Wastewater Research: As a phosphorus-containing organic compound, DTPMPA is also relevant to research on phosphonate behavior, persistence, and removal in wastewater treatment systems.
