Correct spelling for the English word "alcosol" is [ˈalkəsˌɒl], [ˈalkəsˌɒl], [ˈa_l_k_ə_s_ˌɒ_l] (IPA phonetic alphabet).
Same as a hydrosol, with alcohol instead of water as the dispersion means.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.