Diethylenetriaminepenta(methylene-phosphonic acid)
Efficient Corrosion Protection: Forms stable complexes with steel ions, effectively safeguarding metal surfaces from corrosion.
Strong Scale Removal: Prevents and dissolves calcium-based deposits such as carbonates and sulfates.
Excellent Acidic Solubility: Readily dissolves in acidic solutions, allowing flexible use in different applications.
Safe and Non-Toxic: Provides reliable performance without harmful effects, making it suitable for a wide range of industrial processes.
Diethylenetriaminepenta(methylene-phosphonic acid) is commonly applied as both a scale inhibitor and corrosion protection agent. This compound is a viscous liquid with a brown to reddish-brown appearance and is non-toxic. It has the molecular formula C9H28O15N3P5 and a relative molecular mass of 573.2. It dissolves readily in acidic media and, when present in water, can generate stable polynuclear complexes with steel ions. The substance is well dispersible in aqueous systems and effectively hinders the crystallization of calcium salts, including carbonate and sulfate forms. By suppressing crystal growth, it provides reliable prevention of scale formation across a variety of industrial uses.
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 | - |
Diethylenetriaminepenta(methylenephosphonic acid) is a phosphonate that functions as a wastewater pollutant and serves as a key component in phosphorus-containing nanoparticles and materials. For example, it is used in the preparation of chitosan nanoparticles for plutonium pulmonary decorporation. A solution of Diethylenetriaminepentakis(methylphosphonic acid) is suitable for studies investigating the dynamics and kinetics of sodium sulfate crystallization in the presence of various organophosphonic acids. It can also be employed as a ligand for the characterization of Ce³⁺ complexes through luminescence spectroscopy.
