Product Details


Potassium Salt of HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA•K6

Potassium Salt of HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA•K6 is a valuable scale inhibitor in high pH and alkaline conditions. It is a white crystal powder at room temperature, slightly soluble in water, with less than 0.1% solubility. This product can be used for water treatment in boilers and RO membrane treatment and as an effective corrosion inhibitor. HMDTMPA•K6 has many other uses, such as preventing scale salts in cooling systems and protecting against metal corrosion. It also helps to reduce the amount of calcium carbonate deposits on surfaces.

Product Description

CAS No. 53473-28-2

Molecular Formula: C10H22N2O12P4K6

Structural Formula:

Structural Formula:

Product Features

HMDTMPA•K6 is a soluble compound that is highly effective in preventing scale buildup in alkaline environments and in water with high pH values. With its unique properties, it can be used to treat boiler water and reverse osmosis membrane systems. It has been proven to provide excellent results for calcium sulfate inhibition, allowing for smoother operation of your system.

The amount of HMDTMPA•K6 needed for boiler water treatment.

Calculating the amount of HMDTMPA•K6 needed for boiler water treatment depends on various factors, including the boiler’s type and size, the water’s hardness, and the pH level. Generally speaking, using between 0.1-0.5 ppm (parts per million) for calcium sulfate scale inhibition is recommended. In addition, it is essential to monitor pH levels to ensure that they remain within an acceptable range (7-9).

HMDTMPA•K6 is a highly effective scale inhibitor for calcium sulfate and can be used in situations with high pH values and alkalinity. It is soluble in water and can be added directly to boiler feedwater or injected into the system regularly. It is important to note that too much HMDTMPA•K6 can cause foaming and corrosion problems, so monitoring its usage and adjusting accordingly carefully is essential.

Overall, calculating the amount of HMDTMPA•K6 needed for boiler water treatment requires careful consideration of various factors such as the type and size of the boiler, hardness of water, and pH level. By closely monitoring these parameters and adjusting usage accordingly, you can ensure your boiler remains free from scale buildup while avoiding potential corrosion problems.


AppearanceColorless to yellowish transparent liquid
Active component (as acid) %21.2-24.6
Active component (as salt) %31.0-36.0
Chloride (as Cl-)%4.0 max
Total phosphoric acid (as PO43-)%16.8 min
Fe, mg/L35.0 max
Density (20℃)g/cm31.21-1.31
PH (1% water solution)6.0-8.0

How to Package and Storage

Packaging and storing Potassium Salt of HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA•K6 is straightforward. Here are some tips to ensure it is done safely and efficiently:

  • Store the salt in an airtight container. It should be kept away from extreme temperatures and moisture, as this can lead to corrosion or other damage to the material.
  • If possible, store in a cool, dry location with plenty of ventilation.
  • Be sure to wear protective clothing, including gloves and eye protection when handling the salt.
  • Keep out of reach of children and pets at all times, as it can be harmful if ingested.
  • Check the expiration date on the packaging before using the salt; it may need to be discarded after a certain period of time has passed.
  • Dispose of any unused portions properly according to your city or county regulations; do not pour down drains or sewers.

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