Diethylene Triamine Penta Methylene Phosphonic Acid – DTPMP
Synonyms:
DTPMP; DETPMP; 1,2-Diamino-Cyclohexane-Tetrakis(Methylene Phosphonic Acid); Mayoquest 1860; Dequest 2060; Briquest 543-50A
Identification:
CAS No.: 15827-60-8 Molecular formula: C9H28O15N3P5
Structural Formula:
Production Info:
The DTPMP production is featured as simple. The reaction starts under proper temperature after 3 main raw materials are put into the reactor. They are diethylenetriamine (DETA), phosphorus acid and formaldehyde. No waste gas, solid and sewage generate during the production.
DTPMP Properties:
| Property | DTPMP |
|---|---|
| CaCO3 Inhibition | Very Good |
| CaSO4 Inhibition | Very Good |
| BaSO4 Inhibition | Good |
| Sequestration | Excellent |
| Calcium Compatibility | Good |
| Chlorine Stability | Poor |
| Iron Control | Very Good |
| Steel Corrosion Inhibition | Very Good |
| Stain Removal | Very Good |
| Deflocculation | OK |
Description:
DTPMP is a routine water quality stabilizer with excellence in inhibiting corrosion and scale. It is effective in inhibiting the precipitation of carbonate (especially BaSO4), sulfate (CaSO4, MgSO4) and phosphate (CaPO4, MgPO4), even without any dispersant.
Its performance in high pH situation is better than any other organophosphonate, particularly in cleaning sulphate scales. No extra pH adjustment is needed. Its tolerance to high temperature is also good.
Besides, DTPMP is a multidentate chelating agent and a stabilizer of hydrogen peroxide.
Specification:
| Items | Index |
|---|---|
| Appearance | Brown transparent liquid |
| Active acid % | 48.0-52.0 |
| Chloride (as Cl-)% | 14-17 |
| pH (1% solution) | 2.0 max |
| Density (20℃) g/cm3 | 1.35-1.45 |
| Fe,mg/l | 35 max |
Use:
The main application for DTPMPA is as antiscalant, corrosion inhibitors and/or sequestrant in cooling water system, boiler, oilfield refilling system etc.
In alkali condition (pH 10-11), the recommended dosage is 3mg/L. DTPMPA is also used in dyeing industry as peroxide stabilizer with a higher dosage of 20-50mg/L. A detergent in the daily chemical industry is another application.
Packing:
200L drum, 1000L IBC tote
Transport Info:
Corrosive
IMO class 8, UN 3265