Haltermann Carless study: Providing the right balance between Active Ingredients (AIs) and solvency
C12 aromatic solvents are the predominant hydrocarbons for stabilising and solubilising OD and EC formulations. C12 solvents are preferred over C10 solvents for safety and handling reasons.
In view of this Haltermann Carless has conducted a solvency and solubility study to further evaluate the behaviour of aromatic solvents and their influence on the solvency power to agrochemical formulations.
In our study, dissolution curves were generated for an active ingredient in various Caromax® solvents. By monitoring the temperature of solvent against the weight of active ingredient gradually added, we were able to generate and compare the dissolution curves for each Caromax® solvent.
Whilst the method of our study needs further development and adaptation to various physical and chemical qualities of active ingredients, it provides some sensible initial results:
The Caromax® products whose curves reach the top right of the graph offer the best solvency for that particular active ingredient. This indicated that a move to C12 aromatics may provide optimisation for this specific active ingredient.
In the agrochemical market there are several hundreds of active ingredients in use. To further optimise the performance of herbicides, fungicides and pesticides by finding the right balance between suitable AIs and solvency, Haltermann Carless puts a lot of efforts in research activities. The results will support our formulators and customers to select the most suitable Caromax® heavy aromatic solvent.
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