Formisol is a non-existent word and therefore, does not have a clear spelling. However, if we break down the word into its individual phonemes, we can attempt to provide a phonetic transcription. "Form" has the phonemes /f/, /ɔː/, and /m/. "Sol" has the phonemes /s/, /ɒ/, and /l/. Therefore, the possible IPA transcription for the word "formisol" could be /fɔːmɪsɒl/. It is important to note that this is not a real word and this transcription is only a hypothetical representation.
Trade name of an alcoholic soap solution containing formaldehyde.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.