Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA)

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CAS No.  15827-60-8
Molecular formula: C9H28O15N3P5            
Relative molecular mass:573.2
Structural formula:

Other name: DTPMP; DTPMPA; DETPMP; Diethylene Triamine Penta (Methylene Phosphonic Acid); Diethylenetriaminepenta -Methylenephosphonic Acid（DETPMP）; DETPMP(A); Diethylene Triamine Penta

1. Performance and usage
DTPMPA is non-toxic and easily soluble in acidic solutions, with excellent scale and corrosion inhibition effects and good temperature resistance, can inhibit the formation of carbonate and sulfate scales, with better scale and corrosion inhibition performance than other organic phosphines in alkaline environment and high temperature (above 210℃).
In water treatment, it is used as a scale and corrosion inhibitor for circulating cooling water and boiler water. It is especially suitable for use in alkaline circulating cooling water as a scale and corrosion inhibitor without pH adjustment. It can also be used for oilfield water injection, cooling water, and boiler water containing high levels of barium carbonate; when used alone in compound chemicals, there is no need to add a dispersant, and the amount of dirt deposited will still be very small.
It can also be used as peroxide stabilizer (especially has good stabilizing effect under high temperature conditions), also is a chelating agent for textile printing and dyeing, pigment dispersant, oxygen delignification stabilizer, trace element carrier in chemical fertilizers, and concrete additive. In addition, it has also been widely used in papermaking, electroplating, metal pickling and cosmetics. It can also be used as a stabilizer for oxidizing fungicides.

3.Technical indicators

Items	Index
Appearance	Brown clear liquid
Active acid, %	≥ 50.0
Chloride (as Cl-), %	12-17
Density (20℃), g/cm3	1.35-1.45
pH (1% water solution)	≤ 2.0
Fe, mg/L	≤ 35.0

4.Using Method
As a scale inhibitor, the concentration generally be used is 1-30 mg/L. As a cleaning agent, the concentration generally be used is 1000-2000 mg/L. It is usually together used with polycarboxylic acid-based scale inhibitor and dispersant. When used in other industries, the dosage should be determined based on concrete experiments.

4. Packaging and storage
Liquid: 25kg or 30kg per plastic barrel;
Store in a cool and ventilated place indoors, the storage period is 1 year.

5. Safety protection
This product is acidic. Pay attention to labor protection during operation. Avoid contact with skin, eyes, etc. After contact, flush with plenty of water immediately.

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