M390
Paratene™ M390 Organic Acid for Industrial Cleaning
Acids are the most commonly used chemicals for the removal of scales and deposits from industrial systems. Paratene™ M390 is a strong organic acid that combines the best properties of inorganic acids with the benefits of the weaker organic acids.
Any acid used in cleaning must meet several criteria:
- Utility: the acid must dissolve the scale or deposit in question
- Efficiency: the acid must dissolve the scale by using the minimum of chemical at a rapid rate.
- Compatibility: the acid must not damage the equipment or process.
- Safety: the acid must be easy to handle, and simple to dispose.
Physical Properties Comparison
The following table shows the molecular weights and Ka values for several common acids. The hydrogen ion activity of an acid solution is related to the Ka value and the acid concentration.
| Acid | Ka Value | Molecular Weight (g/mole) |
|---|---|---|
| Paratene™ M390 | 8.30E+01 | 96.11 |
| Hydrochloric | 1.00E+03 | 36.5 |
| Sulphuric | 1.00E+03 | 98 |
| Phosphoric | 7.30E-03 | 97 |
| Sulphamic | 1.02E-01 | 97 |
| Formic | 1.77E-04 | 46 |
| Acetic | 1.75E-05 | 60 |
| Citric | 7.50E-04 | 210.14 |
As can been seen above, the strong acids - hydrochloric, sulphuric, and M390 have substantially higher Ka values than the other acids. The hydrogen ion strength of a solution relates to each acid and its Ka value using the following formula.
(1) Ka = [H + ][A - ]/[HA]
The above formula gives the relationship between the hydrogen ions available in solution and the acid concentration. The hydrogen ion activity is then proportional to the reaction rate of the acid. There fore more hydrogen ions in solution the quicker the acid will dissolve many scales.
Process Patent Pending
A second consideration is that cleaning acids are typically applied on a percentage weight basis, but the actual activity of each acid is dependant on the molar concentration. The table below represents the molar concentrations for each of the acids considered.
Cleaning Agent Molarity
| Weight % | HCl | H2SO4 | H2PO4 | M390 | Sulphamic | Formic | Acetic | Citric |
|---|---|---|---|---|---|---|---|---|
| 0.5 | 0.14 | 0.05 | 0.05 | 0.05 | 0.051 | 0.11 | 0.083 | 0.024 |
| 1 | 0.27 | 0.10 | 0.10 | 0.10 | 0.10 | 0.22 | 0.17 | 0.048 |
| 2 | 0.55 | 0.20 | 0.21 | 0.21 | 0.21 | 0.43 | 0.33 | 0.095 |
| 3 | 0.82 | 0.31 | 0.31 | 0.31 | 0.31 | 0.65 | 0.5 | 0.14 |
| 5 | 1.37 | 0.51 | 0.51 | 0.52 | 0.51 | 1.09 | 0.83 | 0.24 |
| 10 | 2.7 | 1.03 | 1.03 | 1.04 | 1.03 | 2.17 | 1.67 | 0.48 |
More information can be found on this product's Brochure, Technical Data Sheet (TDS) and Material Safety Data Sheet (MSDS), which are available upon request.
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