Dissolving salicylic acid in ethanol faster & easier for jessner peel
I am making modified jessner peel of this formula
Salicylic acid 14%
Lactic acid 14%
Citric acid 8%
I have ethanol 70%
I have made two samples
1. 50g size
I added salicylic acid to ethanol in RT, mixed for 20 minutes with spoon but SA didn’t dissolve completely, then added lactic acid, then added citric acid. 3g ethanol had evaporated so i added 3g more ethanol and mixed for 10 minutes. . During mixing some SA was sticking and solidified on the walls of the pot in which i was mixing them. At the end there was some undissolved solids but i bottled it. When i saw it next day, it was completely dissolved and uniform.
2. 100g size
Next day i made another batch. Added all the ingredients in a 120ml bottle and shaked for 5 minutes once in each hour. But it didn’t dissolve completely at the end of the day.
Next day there wasn’t any undissolved solids but something string floating as of the picture. I continued shaking bottle for 5 minutes each hour but this thing didn’t dissolve.
My question is
1. Can we use high shear homogenizer to dissolve salicylic acid in ethanol? I red somewhere that it created heat and isn’t suitable specially for large batches.
2. Dissolving SA in ethanol, some ethanol evaporates during mixing, what is the best thing we should do about it? Specially in lage batches.
3. What is your best method to dissolve SA in ethanol or reduce the time of dissolving?
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