DTPMP 2021-01-13T02:02:28+00:00

Diethylene Triamine Penta  Methylene Phosphonic Acid – DTPMP


DTPMP; DETPMP; 1,2-Diamino-Cyclohexane-Tetrakis(Methylene Phosphonic Acid); Mayoquest 1860; Dequest 2060; Briquest 543-50A


CAS No.: 15827-60-8                                                     Molecular formula: C9H28O15N3P5

Structural Formula:

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


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.


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


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.


200L drum, 1000L IBC tote

Transport Info:


IMO class 8, UN 3265

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