We are attempting to fully mix potassium iodide in sunflower oil, and suspect that we can use ethanol as an intermediary solvent; add the ethanol to sunflower oil, and heat the mixture to remove the ethanol. Any thoughts? Ultimately, we want to mix potassium iodide and cocoa butter; cocoa butter mixes readily with sunflower oil. Any help would be much, much appreciated.
Potassium Iodide is soluble in ethanol at about 1.8g/100mL at room temp.; follow the link to the reference. You will have to take precautions to keep the KI from oxidizing to give iodine (exclude air and light) which will readily react with the double bonds present in the sunflower oil and/or cocoa butter.
http://pubs.acs.org/doi/pdf/10.1021/je800682p
Dear Eugene Rosov,
I suggest that you make emulsion, or cream of the preparation. This can be made by the following steps:
Dissolve KI in water, add emulsifying agent such as SLS, Acacia or other and mix with the oily phase. To obtain the appropriate viscosity you should add viscolyzing (viscosity) agent. By doing so you do not need to use ethanol and to remove it.
If you proceed with the procedure you indicated, after the evaporation of ethanol the KI has a great chance to precipitate since it is not soluble in the other ingredient of the formulation.
Hoping this will be helpful,
Rafik
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