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Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
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Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA)

CAS No. 15827-60-8 EINECS No. 239-931-4
Molecular Formula C9H28O15N3P5 Molecular Weight 573.2
Structural Formula

DTPMPA Structural Formula

Product Features

DTPMPA is innocuous, easy to be dissolved in acid solution. DTPMPA is an excellent inhibitor for mineral deposits (for example CaCO3, BaSO4, SrSO4) .and a powerful complexing agent. DTPMPA inhibits scale formation at extremely low (ppm) dosage levels, sub-stoichiometric concentrations calculated on hardness of water. On situation of alkali environment and high temperature (above 210℃) , wide range of PH Values, DTPMPA has better scale and corrosion inhibition effect than other organophosphines.

Technical Specification

Parameter Standard
Appearance Brown transparent liquid
Active content, % 48.0-52.0
Chloride (as Cl-), % 12-17
Density (20℃), g/cm3 1.35-1.45
pH (1% water solution) 2.0 max
Fe, mg/L 35 max

Applications & Usage

DTPMPA can be used for scale and corrosion inhibitor in circulating cool water system, boiler water, especially in alkali circulating cool water system without additional pH regulation.

DTPMPA can be used in oilfield refill water, cool water and boiler water with high concentration of barium carbonate. When used alone, little scale sediment is found even none of dispersant is used.

DTPMPA can be used for peroxide stabilizer, chelating agent in woven & dyeing industry, pigment dispersant, microelement’s carrying agent in fertilizer and concrete modifier.

DTPMPA is used in papermaking, electroplating, acid cleaning and cosmetics.

Scale & Corrosion Inhibition Performance

CaCO3 inhibition CaSO4 inhibition CaF2 inhibition Iron control Sequestration
Very Good Excellent Very Good Very Good Very Good
Calcium tolerance Iron control Sequestration Iron control
Good Yes Excellent Very Good

Package & Storage

DTPMPA Liquid
25L Drum 200L Drum 1000L IBC ISO Tank
25kg Bag 200L Drum packaging 1000L IBC packaging
Storage for 10 months in shady room and dry place.

Hazard & Safety Precaution

Hazard Information Safety Precaution

Corrosive, Class 8, UN 3265 Corrosive, Class 8, UN 3265

Wear protective gloves Wear protective goggles Wear protective clothing

Once contacted with eye and skin, flush with plenty of clean water.

Alternative Name / Synonyms

  1. DTPMP;
  2. DTPMPA;
  3. DETPMP;
  4. Diethylene Triamine Penta (Methylene Phosphonic Acid);
  5. DIETHYLENE TRIAMINE PENTA;
  6. DETPMP(A);
  7. Diethylenetriaminepenta -Methylenephosphonic Acid(DETPMP)
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