Stearic Acid Neutralization in Emulsions
In some formulas where stearic acid is being used as an emulsifier, I see it being neutralized to pH 6.5 and other times I see it neutralized to pH 7.5 or 8. I had learned that stearic acid should be neutralized to ~pH 7.5 -8, because otherwise if it is lower, not all the stearic acid will be neutralized? Is that correct? Basically, I am asking what is the optimal pH stearic acid should be neutralized to when it is used as an emulsifier.
Thank you for your help.